Support customizable pyproject.toml during project creation #779

Closed
#782
Closed
Support customizable pyproject.toml during project creation#779
#782
Assignees
jesseturner21
Labels
enhancementNew feature or request

Description

@acere
acere
opened on Apr 7, 2026

Description

When running agentcore create in corporate/enterprise environments that require proxy configurations or custom PyPI indexes, the generated pyproject.toml does not include the necessary settings for uv sync to succeed. The Python environment setup step fails because uv cannot reach the default package index or requires additional configuration (e.g., proxy settings, custom index URLs, trusted hosts) that cannot be injected before the install runs.

Use Case

Organizations behind corporate proxies or using private PyPI registries need to configure pyproject.toml with settings such as:

  • Custom [[tool.uv.index]] entries pointing to internal PyPI mirrors
  • Proxy configuration
  • Trusted host declarations
  • Additional source repositories

Currently, agentcore create generates a fixed pyproject.toml and immediately runs uv sync, with no opportunity to customize the file beforehand. This causes the Python environment setup to fail in restricted network environments.

Proposed Solution

Add support for one or more of the following:

  1. A --pyproject-extras flag (or config file option) that merges user-provided TOML settings into the generated pyproject.toml before uv sync executes.
  2. A --skip-install flag (shared with the npm install skip) that creates the project scaffolding without running uv sync, allowing users to modify pyproject.toml before installing manually.
  3. A --uv-index-url flag to specify a custom package index URL that gets written into the generated pyproject.toml.
  4. Support for a user-level or project-level config file (e.g., .agentcorerc) where Python-specific registry and proxy constraints can be defined.

Acceptance Criteria

  • Running agentcore create --skip-install generates the full project scaffolding without executing uv sync.
  • The CLI outputs a clear message indicating that Python dependency installation was skipped and must be done manually.
  • Running agentcore create --uv-index-url <url> (or equivalent syntax) configures the generated pyproject.toml with the provided index URL before uv sync runs.
  • User-provided TOML settings are correctly merged into the generated pyproject.toml without overwriting template defaults.
  • New flags are documented in agentcore create --help.
  • Existing behavior (no flags) remains unchanged — uv sync still runs by default.
  • The feature works across supported platforms (Windows, macOS, Linux).

Additional Context

This is a common blocker for enterprise teams operating behind corporate proxies or restricted networks. Combined with a --skip-install flag (also requested for package.json customization), this would significantly improve the onboarding experience for enterprise users.

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enhancementNew feature or request

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    , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
     blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

    Skip to content
    Support customizable pyproject.toml during project creation #779
    Closed
    #782
    Closed
    Support customizable pyproject.toml during project creation#779
    #782
    Assignees
    jesseturner21
    Labels
    enhancementNew feature or request
    Description
    @acere
    acere
    opened on Apr 7, 2026
    Description
    When running agentcore create in corporate/enterprise environments that require proxy configurations or custom PyPI indexes, the generated pyproject.toml does not include the necessary settings for uv sync to succeed. The Python environment setup step fails because uv cannot reach the default package index or requires additional configuration (e.g., proxy settings, custom index URLs, trusted hosts) that cannot be injected before the install runs.
    Use Case
    Organizations behind corporate proxies or using private PyPI registries need to configure pyproject.toml with settings such as:
    • Custom [[tool.uv.index]] entries pointing to internal PyPI mirrors
    • Proxy configuration
    • Trusted host declarations
    • Additional source repositories
    Currently, agentcore create generates a fixed pyproject.toml and immediately runs uv sync, with no opportunity to customize the file beforehand. This causes the Python environment setup to fail in restricted network environments.
    Proposed Solution
    Add support for one or more of the following:
    1. A --pyproject-extras flag (or config file option) that merges user-provided TOML settings into the generated pyproject.toml before uv sync executes.
    2. A --skip-install flag (shared with the npm install skip) that creates the project scaffolding without running uv sync, allowing users to modify pyproject.toml before installing manually.
    3. A --uv-index-url flag to specify a custom package index URL that gets written into the generated pyproject.toml.
    4. Support for a user-level or project-level config file (e.g., .agentcorerc) where Python-specific registry and proxy constraints can be defined.
    Acceptance Criteria
    •  Running agentcore create --skip-install generates the full project scaffolding without executing uv sync.
    •  The CLI outputs a clear message indicating that Python dependency installation was skipped and must be done manually.
    •  Running agentcore create --uv-index-url <url> (or equivalent syntax) configures the generated pyproject.toml with the provided index URL before uv sync runs.
    •  User-provided TOML settings are correctly merged into the generated pyproject.toml without overwriting template defaults.
    •  New flags are documented in agentcore create --help.
    •  Existing behavior (no flags) remains unchanged — uv sync still runs by default.
    •  The feature works across supported platforms (Windows, macOS, Linux).
    Additional Context
    This is a common blocker for enterprise teams operating behind corporate proxies or restricted networks. Combined with a --skip-install flag (also requested for package.json customization), this would significantly improve the onboarding experience for enterprise users.
    Metadata
    Metadata
    Assignees
    Labels
    enhancementNew feature or request
    Type
    No type
    Projects
    No projects
      Milestone
      No milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

      Skip to content
      Support customizable pyproject.toml during project creation #779
      Closed
      #782
      Closed
      Support customizable pyproject.toml during project creation#779
      #782
      Assignees
      jesseturner21
      Labels
      enhancementNew feature or request
      Description
      @acere
      acere
      opened on Apr 7, 2026
      Description
      When running agentcore create in corporate/enterprise environments that require proxy configurations or custom PyPI indexes, the generated pyproject.toml does not include the necessary settings for uv sync to succeed. The Python environment setup step fails because uv cannot reach the default package index or requires additional configuration (e.g., proxy settings, custom index URLs, trusted hosts) that cannot be injected before the install runs.
      Use Case
      Organizations behind corporate proxies or using private PyPI registries need to configure pyproject.toml with settings such as:
      • Custom [[tool.uv.index]] entries pointing to internal PyPI mirrors
      • Proxy configuration
      • Trusted host declarations
      • Additional source repositories
      Currently, agentcore create generates a fixed pyproject.toml and immediately runs uv sync, with no opportunity to customize the file beforehand. This causes the Python environment setup to fail in restricted network environments.
      Proposed Solution
      Add support for one or more of the following:
      1. A --pyproject-extras flag (or config file option) that merges user-provided TOML settings into the generated pyproject.toml before uv sync executes.
      2. A --skip-install flag (shared with the npm install skip) that creates the project scaffolding without running uv sync, allowing users to modify pyproject.toml before installing manually.
      3. A --uv-index-url flag to specify a custom package index URL that gets written into the generated pyproject.toml.
      4. Support for a user-level or project-level config file (e.g., .agentcorerc) where Python-specific registry and proxy constraints can be defined.
      Acceptance Criteria
      •  Running agentcore create --skip-install generates the full project scaffolding without executing uv sync.
      •  The CLI outputs a clear message indicating that Python dependency installation was skipped and must be done manually.
      •  Running agentcore create --uv-index-url <url> (or equivalent syntax) configures the generated pyproject.toml with the provided index URL before uv sync runs.
      •  User-provided TOML settings are correctly merged into the generated pyproject.toml without overwriting template defaults.
      •  New flags are documented in agentcore create --help.
      •  Existing behavior (no flags) remains unchanged — uv sync still runs by default.
      •  The feature works across supported platforms (Windows, macOS, Linux).
      Additional Context
      This is a common blocker for enterprise teams operating behind corporate proxies or restricted networks. Combined with a --skip-install flag (also requested for package.json customization), this would significantly improve the onboarding experience for enterprise users.
      Metadata
      Metadata
      Assignees
      Labels
      enhancementNew feature or request
      Type
      No type
      Projects
      No projects
        Milestone
        No milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

        Skip to content
        Support customizable pyproject.toml during project creation #779
        Closed
        #782
        Closed
        Support customizable pyproject.toml during project creation#779
        #782
        Assignees
        jesseturner21
        Labels
        enhancementNew feature or request
        Description
        @acere
        acere
        opened on Apr 7, 2026
        Description
        When running agentcore create in corporate/enterprise environments that require proxy configurations or custom PyPI indexes, the generated pyproject.toml does not include the necessary settings for uv sync to succeed. The Python environment setup step fails because uv cannot reach the default package index or requires additional configuration (e.g., proxy settings, custom index URLs, trusted hosts) that cannot be injected before the install runs.
        Use Case
        Organizations behind corporate proxies or using private PyPI registries need to configure pyproject.toml with settings such as:
        • Custom [[tool.uv.index]] entries pointing to internal PyPI mirrors
        • Proxy configuration
        • Trusted host declarations
        • Additional source repositories
        Currently, agentcore create generates a fixed pyproject.toml and immediately runs uv sync, with no opportunity to customize the file beforehand. This causes the Python environment setup to fail in restricted network environments.
        Proposed Solution
        Add support for one or more of the following:
        1. A --pyproject-extras flag (or config file option) that merges user-provided TOML settings into the generated pyproject.toml before uv sync executes.
        2. A --skip-install flag (shared with the npm install skip) that creates the project scaffolding without running uv sync, allowing users to modify pyproject.toml before installing manually.
        3. A --uv-index-url flag to specify a custom package index URL that gets written into the generated pyproject.toml.
        4. Support for a user-level or project-level config file (e.g., .agentcorerc) where Python-specific registry and proxy constraints can be defined.
        Acceptance Criteria
        •  Running agentcore create --skip-install generates the full project scaffolding without executing uv sync.
        •  The CLI outputs a clear message indicating that Python dependency installation was skipped and must be done manually.
        •  Running agentcore create --uv-index-url <url> (or equivalent syntax) configures the generated pyproject.toml with the provided index URL before uv sync runs.
        •  User-provided TOML settings are correctly merged into the generated pyproject.toml without overwriting template defaults.
        •  New flags are documented in agentcore create --help.
        •  Existing behavior (no flags) remains unchanged — uv sync still runs by default.
        •  The feature works across supported platforms (Windows, macOS, Linux).
        Additional Context
        This is a common blocker for enterprise teams operating behind corporate proxies or restricted networks. Combined with a --skip-install flag (also requested for package.json customization), this would significantly improve the onboarding experience for enterprise users.
        Metadata
        Metadata
        Assignees
        Labels
        enhancementNew feature or request
        Type
        No type
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

          Skip to content
          Support customizable pyproject.toml during project creation #779
          Closed
          #782
          Closed
          Support customizable pyproject.toml during project creation#779
          #782
          Assignees
          jesseturner21
          Labels
          enhancementNew feature or request
          Description
          @acere
          acere
          opened on Apr 7, 2026
          Description
          When running agentcore create in corporate/enterprise environments that require proxy configurations or custom PyPI indexes, the generated pyproject.toml does not include the necessary settings for uv sync to succeed. The Python environment setup step fails because uv cannot reach the default package index or requires additional configuration (e.g., proxy settings, custom index URLs, trusted hosts) that cannot be injected before the install runs.
          Use Case
          Organizations behind corporate proxies or using private PyPI registries need to configure pyproject.toml with settings such as:
          • Custom [[tool.uv.index]] entries pointing to internal PyPI mirrors
          • Proxy configuration
          • Trusted host declarations
          • Additional source repositories
          Currently, agentcore create generates a fixed pyproject.toml and immediately runs uv sync, with no opportunity to customize the file beforehand. This causes the Python environment setup to fail in restricted network environments.
          Proposed Solution
          Add support for one or more of the following:
          1. A --pyproject-extras flag (or config file option) that merges user-provided TOML settings into the generated pyproject.toml before uv sync executes.
          2. A --skip-install flag (shared with the npm install skip) that creates the project scaffolding without running uv sync, allowing users to modify pyproject.toml before installing manually.
          3. A --uv-index-url flag to specify a custom package index URL that gets written into the generated pyproject.toml.
          4. Support for a user-level or project-level config file (e.g., .agentcorerc) where Python-specific registry and proxy constraints can be defined.
          Acceptance Criteria
          •  Running agentcore create --skip-install generates the full project scaffolding without executing uv sync.
          •  The CLI outputs a clear message indicating that Python dependency installation was skipped and must be done manually.
          •  Running agentcore create --uv-index-url <url> (or equivalent syntax) configures the generated pyproject.toml with the provided index URL before uv sync runs.
          •  User-provided TOML settings are correctly merged into the generated pyproject.toml without overwriting template defaults.
          •  New flags are documented in agentcore create --help.
          •  Existing behavior (no flags) remains unchanged — uv sync still runs by default.
          •  The feature works across supported platforms (Windows, macOS, Linux).
          Additional Context
          This is a common blocker for enterprise teams operating behind corporate proxies or restricted networks. Combined with a --skip-install flag (also requested for package.json customization), this would significantly improve the onboarding experience for enterprise users.
          Metadata
          Metadata
          Assignees
          Labels
          enhancementNew feature or request
          Type
          No type
          Projects
          No projects
            Milestone
            No milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

            Skip to content
            Support customizable pyproject.toml during project creation #779
            Closed
            #782
            Closed
            Support customizable pyproject.toml during project creation#779
            #782
            Assignees
            jesseturner21
            Labels
            enhancementNew feature or request
            Description
            @acere
            acere
            opened on Apr 7, 2026
            Description
            When running agentcore create in corporate/enterprise environments that require proxy configurations or custom PyPI indexes, the generated pyproject.toml does not include the necessary settings for uv sync to succeed. The Python environment setup step fails because uv cannot reach the default package index or requires additional configuration (e.g., proxy settings, custom index URLs, trusted hosts) that cannot be injected before the install runs.
            Use Case
            Organizations behind corporate proxies or using private PyPI registries need to configure pyproject.toml with settings such as:
            • Custom [[tool.uv.index]] entries pointing to internal PyPI mirrors
            • Proxy configuration
            • Trusted host declarations
            • Additional source repositories
            Currently, agentcore create generates a fixed pyproject.toml and immediately runs uv sync, with no opportunity to customize the file beforehand. This causes the Python environment setup to fail in restricted network environments.
            Proposed Solution
            Add support for one or more of the following:
            1. A --pyproject-extras flag (or config file option) that merges user-provided TOML settings into the generated pyproject.toml before uv sync executes.
            2. A --skip-install flag (shared with the npm install skip) that creates the project scaffolding without running uv sync, allowing users to modify pyproject.toml before installing manually.
            3. A --uv-index-url flag to specify a custom package index URL that gets written into the generated pyproject.toml.
            4. Support for a user-level or project-level config file (e.g., .agentcorerc) where Python-specific registry and proxy constraints can be defined.
            Acceptance Criteria
            •  Running agentcore create --skip-install generates the full project scaffolding without executing uv sync.
            •  The CLI outputs a clear message indicating that Python dependency installation was skipped and must be done manually.
            •  Running agentcore create --uv-index-url <url> (or equivalent syntax) configures the generated pyproject.toml with the provided index URL before uv sync runs.
            •  User-provided TOML settings are correctly merged into the generated pyproject.toml without overwriting template defaults.
            •  New flags are documented in agentcore create --help.
            •  Existing behavior (no flags) remains unchanged — uv sync still runs by default.
            •  The feature works across supported platforms (Windows, macOS, Linux).
            Additional Context
            This is a common blocker for enterprise teams operating behind corporate proxies or restricted networks. Combined with a --skip-install flag (also requested for package.json customization), this would significantly improve the onboarding experience for enterprise users.
            Metadata
            Metadata
            Assignees
            Labels
            enhancementNew feature or request
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              Support customizable pyproject.toml during project creation #779
              Closed
              #782
              Closed
              Support customizable pyproject.toml during project creation#779
              #782
              Assignees
              jesseturner21
              Labels
              enhancementNew feature or request
              Description
              @acere
              acere
              opened on Apr 7, 2026
              Description
              When running agentcore create in corporate/enterprise environments that require proxy configurations or custom PyPI indexes, the generated pyproject.toml does not include the necessary settings for uv sync to succeed. The Python environment setup step fails because uv cannot reach the default package index or requires additional configuration (e.g., proxy settings, custom index URLs, trusted hosts) that cannot be injected before the install runs.
              Use Case
              Organizations behind corporate proxies or using private PyPI registries need to configure pyproject.toml with settings such as:
              • Custom [[tool.uv.index]] entries pointing to internal PyPI mirrors
              • Proxy configuration
              • Trusted host declarations
              • Additional source repositories
              Currently, agentcore create generates a fixed pyproject.toml and immediately runs uv sync, with no opportunity to customize the file beforehand. This causes the Python environment setup to fail in restricted network environments.
              Proposed Solution
              Add support for one or more of the following:
              1. A --pyproject-extras flag (or config file option) that merges user-provided TOML settings into the generated pyproject.toml before uv sync executes.
              2. A --skip-install flag (shared with the npm install skip) that creates the project scaffolding without running uv sync, allowing users to modify pyproject.toml before installing manually.
              3. A --uv-index-url flag to specify a custom package index URL that gets written into the generated pyproject.toml.
              4. Support for a user-level or project-level config file (e.g., .agentcorerc) where Python-specific registry and proxy constraints can be defined.
              Acceptance Criteria
              •  Running agentcore create --skip-install generates the full project scaffolding without executing uv sync.
              •  The CLI outputs a clear message indicating that Python dependency installation was skipped and must be done manually.
              •  Running agentcore create --uv-index-url <url> (or equivalent syntax) configures the generated pyproject.toml with the provided index URL before uv sync runs.
              •  User-provided TOML settings are correctly merged into the generated pyproject.toml without overwriting template defaults.
              •  New flags are documented in agentcore create --help.
              •  Existing behavior (no flags) remains unchanged — uv sync still runs by default.
              •  The feature works across supported platforms (Windows, macOS, Linux).
              Additional Context
              This is a common blocker for enterprise teams operating behind corporate proxies or restricted networks. Combined with a --skip-install flag (also requested for package.json customization), this would significantly improve the onboarding experience for enterprise users.
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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                Support customizable pyproject.toml during project creation #779
                Closed
                #782
                Closed
                Support customizable pyproject.toml during project creation#779
                #782
                Assignees
                jesseturner21
                Labels
                enhancementNew feature or request
                Description
                @acere
                acere
                opened on Apr 7, 2026
                Description
                When running agentcore create in corporate/enterprise environments that require proxy configurations or custom PyPI indexes, the generated pyproject.toml does not include the necessary settings for uv sync to succeed. The Python environment setup step fails because uv cannot reach the default package index or requires additional configuration (e.g., proxy settings, custom index URLs, trusted hosts) that cannot be injected before the install runs.
                Use Case
                Organizations behind corporate proxies or using private PyPI registries need to configure pyproject.toml with settings such as:
                • Custom [[tool.uv.index]] entries pointing to internal PyPI mirrors
                • Proxy configuration
                • Trusted host declarations
                • Additional source repositories
                Currently, agentcore create generates a fixed pyproject.toml and immediately runs uv sync, with no opportunity to customize the file beforehand. This causes the Python environment setup to fail in restricted network environments.
                Proposed Solution
                Add support for one or more of the following:
                1. A --pyproject-extras flag (or config file option) that merges user-provided TOML settings into the generated pyproject.toml before uv sync executes.
                2. A --skip-install flag (shared with the npm install skip) that creates the project scaffolding without running uv sync, allowing users to modify pyproject.toml before installing manually.
                3. A --uv-index-url flag to specify a custom package index URL that gets written into the generated pyproject.toml.
                4. Support for a user-level or project-level config file (e.g., .agentcorerc) where Python-specific registry and proxy constraints can be defined.
                Acceptance Criteria
                •  Running agentcore create --skip-install generates the full project scaffolding without executing uv sync.
                •  The CLI outputs a clear message indicating that Python dependency installation was skipped and must be done manually.
                •  Running agentcore create --uv-index-url <url> (or equivalent syntax) configures the generated pyproject.toml with the provided index URL before uv sync runs.
                •  User-provided TOML settings are correctly merged into the generated pyproject.toml without overwriting template defaults.
                •  New flags are documented in agentcore create --help.
                •  Existing behavior (no flags) remains unchanged — uv sync still runs by default.
                •  The feature works across supported platforms (Windows, macOS, Linux).
                Additional Context
                This is a common blocker for enterprise teams operating behind corporate proxies or restricted networks. Combined with a --skip-install flag (also requested for package.json customization), this would significantly improve the onboarding experience for enterprise users.
                Metadata
                Metadata
                Assignees
                Labels
                enhancementNew feature or request
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions