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[1/n][sl][github][gh stacks] support headers and list params - #1392

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[1/n][sl][github][gh stacks] support headers and list params#1392
raydatray wants to merge 1 commit into
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raydatray:pr1392

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@raydatray

@raydatrayraydatray commented Jul 31, 2026

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ctx

github added native stacked pull requests, it would be nice to add native support to it for sapling!

this stack lets sl pr submit and sl pull via a new github.pr.workflow = stacked mode

changes made

  • github_gh_cli.make_request accepts custom headers (-H, needed for the X-GitHub-Api-Version preview header)
  • _format_param supports list values using the gh api repeated-field syntax (pull_requests[]=101)
  • an empty list is passed explicitly as key[] without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
  • mock_utils: MockGitHubServer now tracks which expectations were consumed; tests can opt in via wrap_with_consumption_check to fail when an expected request silently stops happening (closes the old TODO)

test plan

doctests in _format_param (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: gh api -F "pull_requests[]" --verbose sends {"pull_requests": []}


Stack created with Sapling. Best reviewed with ReviewStack.

@meta-codesync

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This pull request has been imported. If you are a Meta employee, you can view this in D114402510. (Because this pull request was imported automatically, there will not be any future comments.)

Comment on lines +116 to +119
if isinstance(value, list):
return list(
itertools.chain(*[_format_param(f"{key}[]", v) for v in value])
)

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Suggested change
ifisinstance(value, list):
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)
ifisinstance(value, list):
ifnotvalue:
return ["-F", f"{key}[]"]
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)

I have not finished reading the stack, but gh api states "To pass an empty array, use key[] without a value." (https://cli.github.com/manual/gh_api)

if we're formatting a empty list, we should do so explicitly rather than dropping the param and not sending it since it seems like "empty array" and "missing field" can have different behaviors downstream

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hi Genevieve! thanks for taking the time to take a look, sorry for the turn around time work has been busy. i've taken another sweep at the stack and applied your suggestion

@lazopm

lazopm commented Aug 7, 2026

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I am really excited for this to land! after leaving Meta having diff stacks is something I miss every day. If we get this right it might be the thing that pushes SL more mainstream. Today it's hard for me to sell sapling to my team since the workflow generates unreadable massive PRs unless you're diligent about managing the stack, and using ReviewStack on top just feels hacky vs something native to github.

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

I hope we can expedite merging this behind an experimental setting flag. @genevievehelsel@raydatray

I'm writing a ton of PRs across 2-3 repos with sapling, happy to beta test and file/fix bugs as I find them.

@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

@raydatray

raydatray commented Aug 13, 2026

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@lazopm

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

unfortunately since the stack feature doesnt support forks, i cant make show off the feature here. but in the subsequent diffs in the test plan i do show screenshots of me using the feature. i see that youve also done your own implementation, if you have more free time than me, i am more than happy handing this feature off to you and dogfooding it

edit: this diff shows step by step the feature #1397

### ctx
github added native stacked pull requests, it would be nice to add native support to it for sapling!
this stack lets `sl pr submit` and `sl pull` via a new `github.pr.workflow = stacked` mode
### changes made
- `github_gh_cli.make_request` accepts custom headers (`-H`, needed for the `X-GitHub-Api-Version` preview header)
- `_format_param` supports list values using the `gh api` repeated-field syntax (`pull_requests[]=101`)
- an empty list is passed explicitly as `key[]` without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
- mock_utils: `MockGitHubServer` now tracks which expectations were consumed; tests can opt in via `wrap_with_consumption_check` to fail when an expected request silently stops happening (closes the old TODO)
### test plan
doctests in `_format_param` (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: `gh api -F "pull_requests[]" --verbose` sends `{"pull_requests": []}`
@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

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@raydatray@lazopm@genevievehelsel
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[1/n][sl][github][gh stacks] support headers and list params by raydatray · Pull Request #1392 · facebook/sapling · GitHub
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[1/n][sl][github][gh stacks] support headers and list params - #1392

Open
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392
Open

[1/n][sl][github][gh stacks] support headers and list params#1392
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392

Conversation

@raydatray

@raydatrayraydatray commented Jul 31, 2026

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ctx

github added native stacked pull requests, it would be nice to add native support to it for sapling!

this stack lets sl pr submit and sl pull via a new github.pr.workflow = stacked mode

changes made

  • github_gh_cli.make_request accepts custom headers (-H, needed for the X-GitHub-Api-Version preview header)
  • _format_param supports list values using the gh api repeated-field syntax (pull_requests[]=101)
  • an empty list is passed explicitly as key[] without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
  • mock_utils: MockGitHubServer now tracks which expectations were consumed; tests can opt in via wrap_with_consumption_check to fail when an expected request silently stops happening (closes the old TODO)

test plan

doctests in _format_param (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: gh api -F "pull_requests[]" --verbose sends {"pull_requests": []}


Stack created with Sapling. Best reviewed with ReviewStack.

@meta-codesync

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This pull request has been imported. If you are a Meta employee, you can view this in D114402510. (Because this pull request was imported automatically, there will not be any future comments.)

Comment on lines +116 to +119
if isinstance(value, list):
return list(
itertools.chain(*[_format_param(f"{key}[]", v) for v in value])
)

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Contributor

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Suggested change
ifisinstance(value, list):
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)
ifisinstance(value, list):
ifnotvalue:
return ["-F", f"{key}[]"]
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)

I have not finished reading the stack, but gh api states "To pass an empty array, use key[] without a value." (https://cli.github.com/manual/gh_api)

if we're formatting a empty list, we should do so explicitly rather than dropping the param and not sending it since it seems like "empty array" and "missing field" can have different behaviors downstream

Copy link
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Author

Choose a reason for hiding this comment

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hi Genevieve! thanks for taking the time to take a look, sorry for the turn around time work has been busy. i've taken another sweep at the stack and applied your suggestion

@lazopm

lazopm commented Aug 7, 2026

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I am really excited for this to land! after leaving Meta having diff stacks is something I miss every day. If we get this right it might be the thing that pushes SL more mainstream. Today it's hard for me to sell sapling to my team since the workflow generates unreadable massive PRs unless you're diligent about managing the stack, and using ReviewStack on top just feels hacky vs something native to github.

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

I hope we can expedite merging this behind an experimental setting flag. @genevievehelsel@raydatray

I'm writing a ton of PRs across 2-3 repos with sapling, happy to beta test and file/fix bugs as I find them.

@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

@raydatray

raydatray commented Aug 13, 2026

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Author

@lazopm

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

unfortunately since the stack feature doesnt support forks, i cant make show off the feature here. but in the subsequent diffs in the test plan i do show screenshots of me using the feature. i see that youve also done your own implementation, if you have more free time than me, i am more than happy handing this feature off to you and dogfooding it

edit: this diff shows step by step the feature #1397

### ctx
github added native stacked pull requests, it would be nice to add native support to it for sapling!
this stack lets `sl pr submit` and `sl pull` via a new `github.pr.workflow = stacked` mode
### changes made
- `github_gh_cli.make_request` accepts custom headers (`-H`, needed for the `X-GitHub-Api-Version` preview header)
- `_format_param` supports list values using the `gh api` repeated-field syntax (`pull_requests[]=101`)
- an empty list is passed explicitly as `key[]` without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
- mock_utils: `MockGitHubServer` now tracks which expectations were consumed; tests can opt in via `wrap_with_consumption_check` to fail when an expected request silently stops happening (closes the old TODO)
### test plan
doctests in `_format_param` (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: `gh api -F "pull_requests[]" --verbose` sends `{"pull_requests": []}`
@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

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@raydatray@lazopm@genevievehelsel
, 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' [1/n][sl][github][gh stacks] support headers and list params by raydatray · Pull Request #1392 · facebook/sapling · GitHub
Skip to content

[1/n][sl][github][gh stacks] support headers and list params - #1392

Open
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392
Open

[1/n][sl][github][gh stacks] support headers and list params#1392
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392

Conversation

@raydatray

@raydatrayraydatray commented Jul 31, 2026

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ctx

github added native stacked pull requests, it would be nice to add native support to it for sapling!

this stack lets sl pr submit and sl pull via a new github.pr.workflow = stacked mode

changes made

  • github_gh_cli.make_request accepts custom headers (-H, needed for the X-GitHub-Api-Version preview header)
  • _format_param supports list values using the gh api repeated-field syntax (pull_requests[]=101)
  • an empty list is passed explicitly as key[] without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
  • mock_utils: MockGitHubServer now tracks which expectations were consumed; tests can opt in via wrap_with_consumption_check to fail when an expected request silently stops happening (closes the old TODO)

test plan

doctests in _format_param (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: gh api -F "pull_requests[]" --verbose sends {"pull_requests": []}


Stack created with Sapling. Best reviewed with ReviewStack.

@meta-codesync

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This pull request has been imported. If you are a Meta employee, you can view this in D114402510. (Because this pull request was imported automatically, there will not be any future comments.)

Comment on lines +116 to +119
if isinstance(value, list):
return list(
itertools.chain(*[_format_param(f"{key}[]", v) for v in value])
)

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
ifisinstance(value, list):
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)
ifisinstance(value, list):
ifnotvalue:
return ["-F", f"{key}[]"]
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)

I have not finished reading the stack, but gh api states "To pass an empty array, use key[] without a value." (https://cli.github.com/manual/gh_api)

if we're formatting a empty list, we should do so explicitly rather than dropping the param and not sending it since it seems like "empty array" and "missing field" can have different behaviors downstream

Copy link
Copy Markdown
Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

hi Genevieve! thanks for taking the time to take a look, sorry for the turn around time work has been busy. i've taken another sweep at the stack and applied your suggestion

@lazopm

lazopm commented Aug 7, 2026

Copy link
Copy Markdown

I am really excited for this to land! after leaving Meta having diff stacks is something I miss every day. If we get this right it might be the thing that pushes SL more mainstream. Today it's hard for me to sell sapling to my team since the workflow generates unreadable massive PRs unless you're diligent about managing the stack, and using ReviewStack on top just feels hacky vs something native to github.

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

I hope we can expedite merging this behind an experimental setting flag. @genevievehelsel@raydatray

I'm writing a ton of PRs across 2-3 repos with sapling, happy to beta test and file/fix bugs as I find them.

@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

@raydatray

raydatray commented Aug 13, 2026

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Author

@lazopm

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

unfortunately since the stack feature doesnt support forks, i cant make show off the feature here. but in the subsequent diffs in the test plan i do show screenshots of me using the feature. i see that youve also done your own implementation, if you have more free time than me, i am more than happy handing this feature off to you and dogfooding it

edit: this diff shows step by step the feature #1397

### ctx
github added native stacked pull requests, it would be nice to add native support to it for sapling!
this stack lets `sl pr submit` and `sl pull` via a new `github.pr.workflow = stacked` mode
### changes made
- `github_gh_cli.make_request` accepts custom headers (`-H`, needed for the `X-GitHub-Api-Version` preview header)
- `_format_param` supports list values using the `gh api` repeated-field syntax (`pull_requests[]=101`)
- an empty list is passed explicitly as `key[]` without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
- mock_utils: `MockGitHubServer` now tracks which expectations were consumed; tests can opt in via `wrap_with_consumption_check` to fail when an expected request silently stops happening (closes the old TODO)
### test plan
doctests in `_format_param` (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: `gh api -F "pull_requests[]" --verbose` sends `{"pull_requests": []}`
@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

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3 participants

@raydatray@lazopm@genevievehelsel
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Skip to content

[1/n][sl][github][gh stacks] support headers and list params - #1392

Open
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392
Open

[1/n][sl][github][gh stacks] support headers and list params#1392
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392

Conversation

@raydatray

@raydatrayraydatray commented Jul 31, 2026

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ctx

github added native stacked pull requests, it would be nice to add native support to it for sapling!

this stack lets sl pr submit and sl pull via a new github.pr.workflow = stacked mode

changes made

  • github_gh_cli.make_request accepts custom headers (-H, needed for the X-GitHub-Api-Version preview header)
  • _format_param supports list values using the gh api repeated-field syntax (pull_requests[]=101)
  • an empty list is passed explicitly as key[] without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
  • mock_utils: MockGitHubServer now tracks which expectations were consumed; tests can opt in via wrap_with_consumption_check to fail when an expected request silently stops happening (closes the old TODO)

test plan

doctests in _format_param (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: gh api -F "pull_requests[]" --verbose sends {"pull_requests": []}


Stack created with Sapling. Best reviewed with ReviewStack.

@meta-codesync

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This pull request has been imported. If you are a Meta employee, you can view this in D114402510. (Because this pull request was imported automatically, there will not be any future comments.)

Comment on lines +116 to +119
if isinstance(value, list):
return list(
itertools.chain(*[_format_param(f"{key}[]", v) for v in value])
)

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Contributor

Choose a reason for hiding this comment

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Suggested change
ifisinstance(value, list):
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)
ifisinstance(value, list):
ifnotvalue:
return ["-F", f"{key}[]"]
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)

I have not finished reading the stack, but gh api states "To pass an empty array, use key[] without a value." (https://cli.github.com/manual/gh_api)

if we're formatting a empty list, we should do so explicitly rather than dropping the param and not sending it since it seems like "empty array" and "missing field" can have different behaviors downstream

Copy link
Copy Markdown
Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

hi Genevieve! thanks for taking the time to take a look, sorry for the turn around time work has been busy. i've taken another sweep at the stack and applied your suggestion

@lazopm

lazopm commented Aug 7, 2026

Copy link
Copy Markdown

I am really excited for this to land! after leaving Meta having diff stacks is something I miss every day. If we get this right it might be the thing that pushes SL more mainstream. Today it's hard for me to sell sapling to my team since the workflow generates unreadable massive PRs unless you're diligent about managing the stack, and using ReviewStack on top just feels hacky vs something native to github.

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

I hope we can expedite merging this behind an experimental setting flag. @genevievehelsel@raydatray

I'm writing a ton of PRs across 2-3 repos with sapling, happy to beta test and file/fix bugs as I find them.

@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

@raydatray

raydatray commented Aug 13, 2026

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Author

@lazopm

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

unfortunately since the stack feature doesnt support forks, i cant make show off the feature here. but in the subsequent diffs in the test plan i do show screenshots of me using the feature. i see that youve also done your own implementation, if you have more free time than me, i am more than happy handing this feature off to you and dogfooding it

edit: this diff shows step by step the feature #1397

### ctx
github added native stacked pull requests, it would be nice to add native support to it for sapling!
this stack lets `sl pr submit` and `sl pull` via a new `github.pr.workflow = stacked` mode
### changes made
- `github_gh_cli.make_request` accepts custom headers (`-H`, needed for the `X-GitHub-Api-Version` preview header)
- `_format_param` supports list values using the `gh api` repeated-field syntax (`pull_requests[]=101`)
- an empty list is passed explicitly as `key[]` without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
- mock_utils: `MockGitHubServer` now tracks which expectations were consumed; tests can opt in via `wrap_with_consumption_check` to fail when an expected request silently stops happening (closes the old TODO)
### test plan
doctests in `_format_param` (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: `gh api -F "pull_requests[]" --verbose` sends `{"pull_requests": []}`
@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

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@raydatray@lazopm@genevievehelsel
, 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' [1/n][sl][github][gh stacks] support headers and list params by raydatray · Pull Request #1392 · facebook/sapling · GitHub
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[1/n][sl][github][gh stacks] support headers and list params - #1392

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facebook:mainfrom
raydatray:pr1392
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[1/n][sl][github][gh stacks] support headers and list params#1392
raydatray wants to merge 1 commit into
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raydatray:pr1392

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@raydatray

@raydatrayraydatray commented Jul 31, 2026

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ctx

github added native stacked pull requests, it would be nice to add native support to it for sapling!

this stack lets sl pr submit and sl pull via a new github.pr.workflow = stacked mode

changes made

  • github_gh_cli.make_request accepts custom headers (-H, needed for the X-GitHub-Api-Version preview header)
  • _format_param supports list values using the gh api repeated-field syntax (pull_requests[]=101)
  • an empty list is passed explicitly as key[] without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
  • mock_utils: MockGitHubServer now tracks which expectations were consumed; tests can opt in via wrap_with_consumption_check to fail when an expected request silently stops happening (closes the old TODO)

test plan

doctests in _format_param (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: gh api -F "pull_requests[]" --verbose sends {"pull_requests": []}


Stack created with Sapling. Best reviewed with ReviewStack.

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This pull request has been imported. If you are a Meta employee, you can view this in D114402510. (Because this pull request was imported automatically, there will not be any future comments.)

Comment on lines +116 to +119
if isinstance(value, list):
return list(
itertools.chain(*[_format_param(f"{key}[]", v) for v in value])
)

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Suggested change
ifisinstance(value, list):
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)
ifisinstance(value, list):
ifnotvalue:
return ["-F", f"{key}[]"]
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)

I have not finished reading the stack, but gh api states "To pass an empty array, use key[] without a value." (https://cli.github.com/manual/gh_api)

if we're formatting a empty list, we should do so explicitly rather than dropping the param and not sending it since it seems like "empty array" and "missing field" can have different behaviors downstream

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hi Genevieve! thanks for taking the time to take a look, sorry for the turn around time work has been busy. i've taken another sweep at the stack and applied your suggestion

@lazopm

lazopm commented Aug 7, 2026

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I am really excited for this to land! after leaving Meta having diff stacks is something I miss every day. If we get this right it might be the thing that pushes SL more mainstream. Today it's hard for me to sell sapling to my team since the workflow generates unreadable massive PRs unless you're diligent about managing the stack, and using ReviewStack on top just feels hacky vs something native to github.

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

I hope we can expedite merging this behind an experimental setting flag. @genevievehelsel@raydatray

I'm writing a ton of PRs across 2-3 repos with sapling, happy to beta test and file/fix bugs as I find them.

@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

@raydatray

raydatray commented Aug 13, 2026

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@lazopm

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

unfortunately since the stack feature doesnt support forks, i cant make show off the feature here. but in the subsequent diffs in the test plan i do show screenshots of me using the feature. i see that youve also done your own implementation, if you have more free time than me, i am more than happy handing this feature off to you and dogfooding it

edit: this diff shows step by step the feature #1397

### ctx
github added native stacked pull requests, it would be nice to add native support to it for sapling!
this stack lets `sl pr submit` and `sl pull` via a new `github.pr.workflow = stacked` mode
### changes made
- `github_gh_cli.make_request` accepts custom headers (`-H`, needed for the `X-GitHub-Api-Version` preview header)
- `_format_param` supports list values using the `gh api` repeated-field syntax (`pull_requests[]=101`)
- an empty list is passed explicitly as `key[]` without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
- mock_utils: `MockGitHubServer` now tracks which expectations were consumed; tests can opt in via `wrap_with_consumption_check` to fail when an expected request silently stops happening (closes the old TODO)
### test plan
doctests in `_format_param` (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: `gh api -F "pull_requests[]" --verbose` sends `{"pull_requests": []}`
@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

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@raydatray@lazopm@genevievehelsel
, 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' [1/n][sl][github][gh stacks] support headers and list params by raydatray · Pull Request #1392 · facebook/sapling · GitHub
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[1/n][sl][github][gh stacks] support headers and list params - #1392

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raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392
Open

[1/n][sl][github][gh stacks] support headers and list params#1392
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392

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@raydatray

@raydatrayraydatray commented Jul 31, 2026

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ctx

github added native stacked pull requests, it would be nice to add native support to it for sapling!

this stack lets sl pr submit and sl pull via a new github.pr.workflow = stacked mode

changes made

  • github_gh_cli.make_request accepts custom headers (-H, needed for the X-GitHub-Api-Version preview header)
  • _format_param supports list values using the gh api repeated-field syntax (pull_requests[]=101)
  • an empty list is passed explicitly as key[] without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
  • mock_utils: MockGitHubServer now tracks which expectations were consumed; tests can opt in via wrap_with_consumption_check to fail when an expected request silently stops happening (closes the old TODO)

test plan

doctests in _format_param (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: gh api -F "pull_requests[]" --verbose sends {"pull_requests": []}


Stack created with Sapling. Best reviewed with ReviewStack.

@meta-codesync

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This pull request has been imported. If you are a Meta employee, you can view this in D114402510. (Because this pull request was imported automatically, there will not be any future comments.)

Comment on lines +116 to +119
if isinstance(value, list):
return list(
itertools.chain(*[_format_param(f"{key}[]", v) for v in value])
)

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Suggested change
ifisinstance(value, list):
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)
ifisinstance(value, list):
ifnotvalue:
return ["-F", f"{key}[]"]
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)

I have not finished reading the stack, but gh api states "To pass an empty array, use key[] without a value." (https://cli.github.com/manual/gh_api)

if we're formatting a empty list, we should do so explicitly rather than dropping the param and not sending it since it seems like "empty array" and "missing field" can have different behaviors downstream

Copy link
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Author

Choose a reason for hiding this comment

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hi Genevieve! thanks for taking the time to take a look, sorry for the turn around time work has been busy. i've taken another sweep at the stack and applied your suggestion

@lazopm

lazopm commented Aug 7, 2026

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I am really excited for this to land! after leaving Meta having diff stacks is something I miss every day. If we get this right it might be the thing that pushes SL more mainstream. Today it's hard for me to sell sapling to my team since the workflow generates unreadable massive PRs unless you're diligent about managing the stack, and using ReviewStack on top just feels hacky vs something native to github.

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

I hope we can expedite merging this behind an experimental setting flag. @genevievehelsel@raydatray

I'm writing a ton of PRs across 2-3 repos with sapling, happy to beta test and file/fix bugs as I find them.

@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

@raydatray

raydatray commented Aug 13, 2026

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Author

@lazopm

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

unfortunately since the stack feature doesnt support forks, i cant make show off the feature here. but in the subsequent diffs in the test plan i do show screenshots of me using the feature. i see that youve also done your own implementation, if you have more free time than me, i am more than happy handing this feature off to you and dogfooding it

edit: this diff shows step by step the feature #1397

### ctx
github added native stacked pull requests, it would be nice to add native support to it for sapling!
this stack lets `sl pr submit` and `sl pull` via a new `github.pr.workflow = stacked` mode
### changes made
- `github_gh_cli.make_request` accepts custom headers (`-H`, needed for the `X-GitHub-Api-Version` preview header)
- `_format_param` supports list values using the `gh api` repeated-field syntax (`pull_requests[]=101`)
- an empty list is passed explicitly as `key[]` without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
- mock_utils: `MockGitHubServer` now tracks which expectations were consumed; tests can opt in via `wrap_with_consumption_check` to fail when an expected request silently stops happening (closes the old TODO)
### test plan
doctests in `_format_param` (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: `gh api -F "pull_requests[]" --verbose` sends `{"pull_requests": []}`
@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

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@raydatray@lazopm@genevievehelsel
, 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' [1/n][sl][github][gh stacks] support headers and list params by raydatray · Pull Request #1392 · facebook/sapling · GitHub
Skip to content

[1/n][sl][github][gh stacks] support headers and list params - #1392

Open
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392
Open

[1/n][sl][github][gh stacks] support headers and list params#1392
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392

Conversation

@raydatray

@raydatrayraydatray commented Jul 31, 2026

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ctx

github added native stacked pull requests, it would be nice to add native support to it for sapling!

this stack lets sl pr submit and sl pull via a new github.pr.workflow = stacked mode

changes made

  • github_gh_cli.make_request accepts custom headers (-H, needed for the X-GitHub-Api-Version preview header)
  • _format_param supports list values using the gh api repeated-field syntax (pull_requests[]=101)
  • an empty list is passed explicitly as key[] without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
  • mock_utils: MockGitHubServer now tracks which expectations were consumed; tests can opt in via wrap_with_consumption_check to fail when an expected request silently stops happening (closes the old TODO)

test plan

doctests in _format_param (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: gh api -F "pull_requests[]" --verbose sends {"pull_requests": []}


Stack created with Sapling. Best reviewed with ReviewStack.

@meta-codesync

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This pull request has been imported. If you are a Meta employee, you can view this in D114402510. (Because this pull request was imported automatically, there will not be any future comments.)

Comment on lines +116 to +119
if isinstance(value, list):
return list(
itertools.chain(*[_format_param(f"{key}[]", v) for v in value])
)

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Contributor

Choose a reason for hiding this comment

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Suggested change
ifisinstance(value, list):
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)
ifisinstance(value, list):
ifnotvalue:
return ["-F", f"{key}[]"]
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)

I have not finished reading the stack, but gh api states "To pass an empty array, use key[] without a value." (https://cli.github.com/manual/gh_api)

if we're formatting a empty list, we should do so explicitly rather than dropping the param and not sending it since it seems like "empty array" and "missing field" can have different behaviors downstream

Copy link
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Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

hi Genevieve! thanks for taking the time to take a look, sorry for the turn around time work has been busy. i've taken another sweep at the stack and applied your suggestion

@lazopm

lazopm commented Aug 7, 2026

Copy link
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I am really excited for this to land! after leaving Meta having diff stacks is something I miss every day. If we get this right it might be the thing that pushes SL more mainstream. Today it's hard for me to sell sapling to my team since the workflow generates unreadable massive PRs unless you're diligent about managing the stack, and using ReviewStack on top just feels hacky vs something native to github.

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

I hope we can expedite merging this behind an experimental setting flag. @genevievehelsel@raydatray

I'm writing a ton of PRs across 2-3 repos with sapling, happy to beta test and file/fix bugs as I find them.

@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

@raydatray

raydatray commented Aug 13, 2026

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Author

@lazopm

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

unfortunately since the stack feature doesnt support forks, i cant make show off the feature here. but in the subsequent diffs in the test plan i do show screenshots of me using the feature. i see that youve also done your own implementation, if you have more free time than me, i am more than happy handing this feature off to you and dogfooding it

edit: this diff shows step by step the feature #1397

### ctx
github added native stacked pull requests, it would be nice to add native support to it for sapling!
this stack lets `sl pr submit` and `sl pull` via a new `github.pr.workflow = stacked` mode
### changes made
- `github_gh_cli.make_request` accepts custom headers (`-H`, needed for the `X-GitHub-Api-Version` preview header)
- `_format_param` supports list values using the `gh api` repeated-field syntax (`pull_requests[]=101`)
- an empty list is passed explicitly as `key[]` without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
- mock_utils: `MockGitHubServer` now tracks which expectations were consumed; tests can opt in via `wrap_with_consumption_check` to fail when an expected request silently stops happening (closes the old TODO)
### test plan
doctests in `_format_param` (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: `gh api -F "pull_requests[]" --verbose` sends `{"pull_requests": []}`
@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

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3 participants

@raydatray@lazopm@genevievehelsel
, 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); [1/n][sl][github][gh stacks] support headers and list params by raydatray · Pull Request #1392 · facebook/sapling · GitHub
Skip to content

[1/n][sl][github][gh stacks] support headers and list params - #1392

Open
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392
Open

[1/n][sl][github][gh stacks] support headers and list params#1392
raydatray wants to merge 1 commit into
facebook:mainfrom
raydatray:pr1392

Conversation

@raydatray

@raydatrayraydatray commented Jul 31, 2026

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ctx

github added native stacked pull requests, it would be nice to add native support to it for sapling!

this stack lets sl pr submit and sl pull via a new github.pr.workflow = stacked mode

changes made

  • github_gh_cli.make_request accepts custom headers (-H, needed for the X-GitHub-Api-Version preview header)
  • _format_param supports list values using the gh api repeated-field syntax (pull_requests[]=101)
  • an empty list is passed explicitly as key[] without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
  • mock_utils: MockGitHubServer now tracks which expectations were consumed; tests can opt in via wrap_with_consumption_check to fail when an expected request silently stops happening (closes the old TODO)

test plan

doctests in _format_param (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: gh api -F "pull_requests[]" --verbose sends {"pull_requests": []}


Stack created with Sapling. Best reviewed with ReviewStack.

@meta-codesync

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This pull request has been imported. If you are a Meta employee, you can view this in D114402510. (Because this pull request was imported automatically, there will not be any future comments.)

Comment on lines +116 to +119
if isinstance(value, list):
return list(
itertools.chain(*[_format_param(f"{key}[]", v) for v in value])
)

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Contributor

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Suggested change
ifisinstance(value, list):
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)
ifisinstance(value, list):
ifnotvalue:
return ["-F", f"{key}[]"]
returnlist(
itertools.chain(*[_format_param(f"{key}[]", v) forvinvalue])
)

I have not finished reading the stack, but gh api states "To pass an empty array, use key[] without a value." (https://cli.github.com/manual/gh_api)

if we're formatting a empty list, we should do so explicitly rather than dropping the param and not sending it since it seems like "empty array" and "missing field" can have different behaviors downstream

Copy link
Copy Markdown
Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

hi Genevieve! thanks for taking the time to take a look, sorry for the turn around time work has been busy. i've taken another sweep at the stack and applied your suggestion

@lazopm

lazopm commented Aug 7, 2026

Copy link
Copy Markdown

I am really excited for this to land! after leaving Meta having diff stacks is something I miss every day. If we get this right it might be the thing that pushes SL more mainstream. Today it's hard for me to sell sapling to my team since the workflow generates unreadable massive PRs unless you're diligent about managing the stack, and using ReviewStack on top just feels hacky vs something native to github.

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

I hope we can expedite merging this behind an experimental setting flag. @genevievehelsel@raydatray

I'm writing a ton of PRs across 2-3 repos with sapling, happy to beta test and file/fix bugs as I find them.

@facebook-github-tools

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@raydatray has updated the pull request. You must reimport the pull request before landing.

@raydatray

raydatray commented Aug 13, 2026

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Author

@lazopm

@raydatray any chance you could upload a screencast of the workflow in your test plan? In fact, can we make THIS stack use the github stacked PRs feature?

unfortunately since the stack feature doesnt support forks, i cant make show off the feature here. but in the subsequent diffs in the test plan i do show screenshots of me using the feature. i see that youve also done your own implementation, if you have more free time than me, i am more than happy handing this feature off to you and dogfooding it

edit: this diff shows step by step the feature #1397

### ctx
github added native stacked pull requests, it would be nice to add native support to it for sapling!
this stack lets `sl pr submit` and `sl pull` via a new `github.pr.workflow = stacked` mode
### changes made
- `github_gh_cli.make_request` accepts custom headers (`-H`, needed for the `X-GitHub-Api-Version` preview header)
- `_format_param` supports list values using the `gh api` repeated-field syntax (`pull_requests[]=101`)
- an empty list is passed explicitly as `key[]` without a value (per the gh api manual) rather than dropped, since an empty array and a missing field can mean different things to an endpoint
- mock_utils: `MockGitHubServer` now tracks which expectations were consumed; tests can opt in via `wrap_with_consumption_check` to fail when an expected request silently stops happening (closes the old TODO)
### test plan
doctests in `_format_param` (registered in test-doctest.py, including the empty-array case), existing github .t suite. verified the empty-array wire format empirically: `gh api -F "pull_requests[]" --verbose` sends `{"pull_requests": []}`
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3 participants

@raydatray@lazopm@genevievehelsel