[3.13] libpython changes by h-vetinari · Pull Request #902 · conda-forge/python-feedstock

h-vetinari · 2026-08-20T07:52:58Z

backport of:

Fixesconda-forge#843 Signed-off-by: Michał Górny <mgorny@quansight.com>

split existing `build_base.{sh,bat}` into `build.sh`/`bld.bat` and `install_base.{sh,bat}` (note that the preceding commit duplicated and renamed `build_base.{sh,bat}` already, so that the diff here is clearer)

Note that this is not for extensions like numpy. It is for executables like lldb. Co-Authored-By: H. Vetinari <h.vetinari@gmx.com>

…026.08.17.07.23.37 Other tools: - conda-build 26.7.0 - rattler-build 0.73.0 - rattler-build-conda-compat 1.4.19

conda-forge-admin · 2026-08-20T07:54:45Z

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

ℹ️ The recipe is not parsable by parser conda-souschef (grayskull). This parser is not currently used by conda-forge, but may be in the future. We are collecting information to see which recipes are compatible with grayskull.
ℹ️ The recipe is not parsable by parser conda-recipe-manager. The recipe can only be automatically migrated to the new v1 format if it is parseable by conda-recipe-manager.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/33362409298. Examine the logs at this URL for more detail.}

isuruf · 2026-08-31T01:07:50Z

Same question as #894 (comment)

h-vetinari · 2026-08-31T01:33:43Z

`linux-64`, regular

---------------------------------------------------
linux-64/libpython-3.13.15-hdc7f604_102_cp313.conda
---------------------------------------------------
Size: 9.3MB
SHA256: 09a4a1a757f5132eadb4da0291dd182758d6a7e4bf617c1884580dd0dabfeaeb
Contents:
?rwxrwxrwx 0/0 0 2026-08-30 23:03:47 lib/libpython3.13.so -> libpython3.13.so.1.0 ?rwxrwxr-x 0/0 33599976 2026-08-30 23:03:47 lib/libpython3.13.so.1.0 ?rwxrwxr-x 0/0 14920 2026-08-30 23:03:47 lib/libpython3.so ----------------------------------------------------------
linux-64/libpython-static-3.13.15-h437bd72_102_cp313.conda
----------------------------------------------------------
Size: 102.1MB
SHA256: e41301f7a6a891d78f4bf4d6dff476d4c6531b5bf5ac81a938ee39dccdc173c1
Contents:
?rw-rw-r-- 0/0 108845410 2026-08-30 22:46:36 lib/libpython3.13.a ?rw-rw-r-- 0/0 108850546 2026-08-30 23:03:38 lib/libpython3.13.nolto.a ?rwxrwxrwx 0/0 0 2026-08-30 23:05:21 lib/python3.13/config-3.13-x86_64-linux-gnu/libpython3.13.a -> ../../libpython3.13.a ------------------------------------------------
linux-64/python-3.13.15-hf47f18c_102_cp313.conda
------------------------------------------------
Size: 23.2MB
SHA256: 3b5e2ac397f4f4664148b80eac4fddb1c0cffdfff2e583d10386de074006ff4f
Contents:
?rw-rw-r-- 0/0 549 2026-08-30 23:04:26 lib/pkgconfig/python-3.13-embed.pc ?rw-rw-r-- 0/0 535 2026-08-30 23:04:26 lib/pkgconfig/python-3.13.pc ?rwxrwxrwx 0/0 0 2026-08-30 23:04:26 lib/pkgconfig/python3-embed.pc -> python-3.13-embed.pc ?rwxrwxrwx 0/0 0 2026-08-30 23:04:26 lib/pkgconfig/python3.pc -> python-3.13.pc ?rw-rw-r-- 0/0 13809 2026-08-30 23:04:18 lib/python3.13/[...]

`osx-arm64`, nogil

---------------------------------------------------
osx-arm64/libpython-3.13.15-h85bc513_2_cp313t.conda
---------------------------------------------------
Size: 1.7MB
SHA256: 0b90b3a6bdeaf211836393999e70bcb34871ffa23f3ff75af814737046bb4b91
Contents:
?rwxrwxr-x 0/0 6039792 2026-08-30 22:43:11 lib/libpython3.13t.dylib ?rwxrwxr-x 0/0 79920 2026-08-30 22:43:11 lib/libpython3.dylib ----------------------------------------------------------
osx-arm64/libpython-static-3.13.15-hf6f26eb_2_cp313t.conda
----------------------------------------------------------
Size: 9.9MB
SHA256: cd79e5dd3eb8c49a5046dbf23bcae60fe4e72bd88faef16c12bc2f77cf91560c
Contents:
?rw-rw-r-- 0/0 13071072 2026-08-30 22:37:49 lib/libpython3.13t.a ?rw-rw-r-- 0/0 13073136 2026-08-30 22:43:04 lib/libpython3.13t.nolto.a ?rwxrwxr-x 0/0 0 2026-08-30 22:44:13 lib/python3.13t/config-3.13t-darwin/libpython3.13t.a -> ../../libpython3.13t.a ------------------------------------------------
osx-arm64/python-3.13.15-h5457bc6_2_cp313t.conda
------------------------------------------------
Size: 13.0MB
SHA256: 452a19608bc3dbe64c83f5a9b60f898d06152d038fc969a8ba9e2b1d598392fd
Contents:
2026-08-30T22:46:04.3022110Z ?rwxrwxr-x 0/0 0 2026-08-30 22:43:36 lib/pkgconfig/python-3.13-embed.pc -> python-3.13t-embed.pc 2026-08-30T22:46:04.3022350Z ?rwxrwxr-x 0/0 0 2026-08-30 22:43:36 lib/pkgconfig/python-3.13.pc -> python-3.13t.pc 2026-08-30T22:46:04.3022520Z ?rw-rw-r-- 0/0 560 2026-08-30 22:43:35 lib/pkgconfig/python-3.13t-embed.pc 2026-08-30T22:46:04.3022750Z ?rw-rw-r-- 0/0 545 2026-08-30 22:43:35 lib/pkgconfig/python-3.13t.pc 2026-08-30T22:46:04.3023030Z ?rwxrwxr-x 0/0 0 2026-08-30 22:43:40 lib/pkgconfig/python3-embed.pc -> python-3.13t-embed.pc 2026-08-30T22:46:04.3023310Z ?rwxrwxr-x 0/0 0 2026-08-30 22:43:40 lib/pkgconfig/python3.pc -> python-3.13t.pc 2026-08-30T22:46:04.3023540Z ?rw-rw-r-- 0/0 13809 2026-08-30 22:43:29 lib/python3.13t/[...]

edit: removed logs for win-64 after also picking relevant changes from #909

h-vetinari · 2026-08-31T01:39:01Z

The commits backported pretty cleanly, so I don't expect much divergence. I extracted the above from the logs, which confirms this.

AFAIU we still need to backport libpython3.dylib to python_min for the likes of lldb. If this PR is fine, I can prepare backport to 3.12 & 3.11 as well. I probably won't bother with 3.10, given that we're about to drop it

after reversal of the build order, these tests are in the wrong place and only held together by re-injecting the full `python` as a test dep, which also hides problems with the files-based tests.

isuruf · 2026-09-01T15:35:11Z

Thanks

xhochyand others added 13 commits August 20, 2026 18:32

Expand OpenSSL version check
2fc2b7d

Split shared Python library to libpython
b77e960
Fixesconda-forge#843 Signed-off-by: Michał Górny <mgorny@quansight.com>

help CMake find the right python
e8bdb31

don't store build artifacts by default
58302af

update or remove obsolete pins in CBC
5e997e0

remove work-arounds for obsolete CI provider
bd4db1e

duplicate and rename build_base.{sh,bat} in anticipation of split
b41608c

reverse build order of python and libpython
605b74c
split existing `build_base.{sh,bat}` into `build.sh`/`bld.bat` and `install_base.{sh,bat}` (note that the preceding commit duplicated and renamed `build_base.{sh,bat}` already, so that the diff here is clearer)

name install scripts consistently
b169ef3

remove empty builds scripts for libpython-* on windows
6ba4b48

disable extremely noisy CMake test logs by default
f35edd5

Add a libpython3.dylib to support ABI3 applications
dae4337
Note that this is not for extensions like numpy. It is for executables like lldb. Co-Authored-By: H. Vetinari <h.vetinari@gmx.com>

MNT: Re-rendered with conda-smithy 2026.8.9 and conda-forge-pinning 2…
5559f0a
…026.08.17.07.23.37 Other tools: - conda-build 26.7.0 - rattler-build 0.73.0 - rattler-build-conda-compat 1.4.19

h-vetinari mentioned this pull request Aug 26, 2026
Add a libpython3.dylib to support ABI3 applications #885
Merged
5 tasks

h-vetinari marked this pull request as ready for review August 30, 2026 22:27

h-vetinari requested review from chrisburr, isuruf, jakirkham, katietz, mbargull, msarahan, ocefpaf, pelson, scopatz and xhochy as code owners August 30, 2026 22:27

h-vetinari force-pushed the abi3_osx_313 branch from 23c1f8a to 59ebbfdCompare August 31, 2026 05:40

h-vetinariand others added 4 commits August 31, 2026 16:57

move script-based libpython tests to python output
5df2836
after reversal of the build order, these tests are in the wrong place and only held together by re-injecting the full `python` as a test dep, which also hides problems with the files-based tests.

filter out windows-specific symbols from stable_abi.dat
059ff1c

simplify
25b00f9

add comment about libpython's (lack of) content on windows
1dbb813

h-vetinari force-pushed the abi3_osx_313 branch from 59ebbfd to 1dbb813Compare August 31, 2026 05:58

isuruf merged commit 28c6e49 into conda-forge:3.13Sep 1, 2026
25 checks passed

h-vetinari deleted the abi3_osx_313 branch September 1, 2026 20:17

This was referenced Sep 1, 2026
[3.12] libpython changes #913
Merged
[3.13] reinstate _OPTIMIZED & LTO_CFLAGS for correct flag handling in install_base.sh #915
Merged
Status Report (2026-09-04) Quansight-Labs/conda-ecosystem-sta-mgmt#155
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[3.13] libpython changes - #902

[3.13] libpython changes#902
isuruf merged 17 commits into
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`linux-64`, regular

`osx-arm64`, nogil