PKG-15601 + PKG-2624 — CF-align freethreading and debug build_type by skupr-anaconda · Pull Request #233 · AnacondaRecipes/python-feedstock

skupr-anaconda · 2026-07-06T11:53:18Z

Summary

Experimental CF-alignment branch stacked on py315b3 / PR #232:

PKG-15601: Replace inverted gil_type + os.environ Jinja with positive freethreading CBC key and linter-safe ternary header
PKG-2624: Add build_type release/debug (unix only) with _debug build-string suffix and debug run_exports; single upload channel ad-testing/label/py315 (no channel_targets zip)

Linter

conda-lint: 0 errors (fixes baseline parsing_jinja_failure on from_source_control)
Selector fixes: [linux and conda-forge] → [linux]; cmake tolerance without || before selectors; vc skip simplified

Test plan

PBP release graph: 0 linter failures, 36/36 build+test (parity with 76f3ef5b)
PBP debug unix variants: _debug build strings on ad-testing/label/py315
win-64 release artifact diff vs baseline graph 76f3ef5b
Merge into py315b3 only after gates pass (user-driven)

Made with Cursor

skupr-anaconda · 2026-07-07T17:33:59Z

Staging artifact check — `5b800b4`

Channel: staging 5b800b4 (64 entries = 32 builds × .conda + .tar.bz2)

Matrix (platform outputs)

Platform	Variants
linux-64, linux-aarch64, osx-arm64	release GIL, release FT, debug GIL, debug FT (`python` + `libpython-static` each)
win-64	release GIL + release FT only (no debug — expected)
noarch	`python-freethreading`, `python-gil`, `python-jit` (release/GIL only; no debug jit)

Repodata vs recipe

Check	Example	Status
FT build_number	`_0_cp315t`	✓
GIL build_number	`_100_cp315`	✓
Debug suffix	`_debug_` in build string	✓
FT track feature	`free-threading`	✓ (Anaconda naming)
FT site-packages	`lib/python3.15t/site-packages`	✓
ABI depends	`python_abi _cp315` / `_cp315t`	✓

Example repodata: linux-64 debug FT python

Prefix layout (tarball inspection)

STDLIB_VER vs VERABI split (post 0f23f75 / f89183b / 58ec5c2):

Variant	stdlib dir	config dir	lib / include
debug GIL	`lib/python3.15/`	`config-3.15d-*`	`libpython3.15d.*`, `include/python3.15d/`
debug FT	`lib/python3.15t/`	`config-3.15td-*`	`libpython3.15td.*`, `include/python3.15td/`

libpython-static debug FT: libpython3.15td.a, libpython3.15t.nolto.a, config symlink under lib/python3.15t/config-3.15td-*/.

Intentional divergences (unchanged)

track_features: free-threading (not CF py_freethreading)
PY_GIL_DISABLED / empty linkage_nature in build string
Single channel ad-testing/label/py315

Notes

bin/python3.15 still exists on debug builds from the generic python/python3.1 symlink chain; primary debug binaries are python3.15d / python3.15td.

Verdict: artifacts at 5b800b4 match CF-align expectations for freethreading + debug build_type.

cbouss

I am not sure using AI is the right call for these kind of changes. It failed the alignment part at least.

cbouss · 2026-07-07T20:38:08Z

+        - rm -f default.profraw  # [osx]
        - test ! -f default.profraw   # [osx]


Looks like AI slop

cbouss · 2026-07-07T20:45:52Z

+          - python {{ ver2 }}.* *_debug_{{ abi_tag }}  # [build_type == "debug"]
      script_env:
        - PY_INTERP_LINKAGE_NATURE={{ linkage_nature_env }}
        - PY_INTERP_DEBUG={{ py_interp_debug }}


That could be aligned as well.

Replace gil_type/os.environ Jinja with positive freethreading CBC key and build_type debug suffix on a single ad-testing/label/py315 channel. Co-authored-by: Cursor <cursoragent@cursor.com>

Use script YAML lists to avoid duplicate-key warnings and replace the obsolete license_file_overspecified skip with only-lint missing_home so conda-lint reports All checks OK on PBP. Co-authored-by: Cursor <cursoragent@cursor.com>

…g keys Document the linkage_nature/linkage_nature_env divergence from conda-forge.

Wire PY_INTERP_DEBUG through Unix build scripts (was DEBUG_PY, so debug variants never got --with-pydebug). Align libpython-static VERABI suffix order with build_base (VER+THREAD+DBG). Skip cmake for freethreading like conda-forge. Add core debug/zstd checks to run_test.py. Co-authored-by: Cursor <cursoragent@cursor.com>

Debug Py_DEBUG builds install stdlib under lib/python${VER}${THREAD}/ while lib/config artifacts use VERABI (e.g. libpython3.15d.so, config-3.15d-*). build_base.sh was writing _sysconfigdata into lib/python3.15d/ which does not exist. Introduce STDLIB_VER for stdlib paths. Drop obsolete skip-lints entry that triggered unknown_check on current anaconda-linter. Co-authored-by: Cursor <cursoragent@cursor.com>

build_base.sh already used STDLIB_VER for stdlib dirs; build_static.sh still used VERABI (e.g. python3.15d/) so pushd to config-3.15d-* failed on debug variants. Align with conda-forge VERABI_NO_DBG split for stdlib vs ABI paths. Co-authored-by: Cursor <cursoragent@cursor.com>

Debug builds name the PIC archive libpython3.15-pic.a (not 3.15d-pic.a); build_static.sh copies that path. Align build_base.sh with conda-forge VERABI_NO_DBG naming so libpython-static debug builds can find the file. Co-authored-by: Cursor <cursoragent@cursor.com>

Debug builds install python3.15d but FindPythonLibs expects unprefixed paths; add conda-forge-style symlinks for bin, lib, and include. Skip python-jit when JIT is disabled (--enable-experimental-jit=no). Remove stray default.profraw before the osx PGO artifact check. Co-authored-by: Cursor <cursoragent@cursor.com>

Remove pydebug symlinks that mapped 3.15d artifacts onto unprefixed paths. Gate the legacy FindPythonLibs cmake test to release GIL builds only, matching the freethreading skip pattern. Co-authored-by: Cursor <cursoragent@cursor.com>

Use PY_FREETHREADING, PY_INTERP_DEBUG for optimization, CF debug symlinks and BUILD_DETAILS copy; drop linkage/OLD_HOST/compiler_compat divergences. Restore skip-lints, CF cmake gating, and remove run_test_py315.py. Co-authored-by: Cursor <cursoragent@cursor.com>

Skip python-jit where build_base.sh disables experimental JIT; set PYTHON_FOR_BUILD on Windows and patch find_python.bat after aka.ms nugetclidl broke; align track_features and ninja test dep with CF. Co-authored-by: Cursor <cursoragent@cursor.com>

Set PYTHON from the conda build env (PR #238 pattern) and drop the find_python.bat patch plus PYTHON_FOR_BUILD workaround. Co-authored-by: Cursor <cursoragent@cursor.com>

…ke-no-system - Skip FindPythonLibs cmake test for freethreading and debug builds - Use cmake-no-system (latest on main) to avoid cmake/libzstd dyld abort on osx - Restore CF-style double-backslash win path checks - Document intentional drop of linkage_nature env Jinja vs conda-forge Co-authored-by: Cursor <cursoragent@cursor.com>

Restore the cross-build pyc exclusion, remove the unsupported profraw cleanup and stale lint suppression, and express cmake gating as a linter-compatible selector. Co-authored-by: Cursor <cursoragent@cursor.com>

skupr-anaconda mentioned this pull request Jul 6, 2026

Python 3.15.0b3 #232

Closed

AnacondaRecipes deleted a comment from package-build-platform Jul 6, 2026

skupr-anaconda requested review from cbouss and ifitchet July 7, 2026 17:36

skupr-anaconda self-assigned this Jul 7, 2026

skupr-anaconda marked this pull request as ready for review July 7, 2026 17:36

cbouss reviewed Jul 7, 2026

View reviewed changes

skupr-anaconda mentioned this pull request Aug 6, 2026

PKG-13567 — Python 3.15.0b4 #239

Merged

skupr-anaconda and others added 14 commits August 18, 2026 20:23

PKG-15601 + PKG-2624: CF-align freethreading and debug build_type

f3a7a0b

Replace gil_type/os.environ Jinja with positive freethreading CBC key and build_type debug suffix on a single ad-testing/label/py315 channel. Co-authored-by: Cursor <cursoragent@cursor.com>

Fix PBP linter: script list form and only-lint scope

e32cdb0

Use script YAML lists to avoid duplicate-key warnings and replace the obsolete license_file_overspecified skip with only-lint missing_home so conda-lint reports All checks OK on PBP. Co-authored-by: Cursor <cursoragent@cursor.com>

Fix PBP graph submission: revert script YAML lists to duplicate strin…

b65984a

…g keys Document the linkage_nature/linkage_nature_env divergence from conda-forge.

Use VERABI_NO_DBG

91ad6ee

Win32: use CONDA_PYTHON_EXE instead of nuget for PCbuild.

26b5506

Set PYTHON from the conda build env (PR #238 pattern) and drop the find_python.bat patch plus PYTHON_FOR_BUILD workaround. Co-authored-by: Cursor <cursoragent@cursor.com>

skupr-anaconda force-pushed the py315b3-cf-align branch from 2e1c490 to 30c1cca Compare August 18, 2026 20:31

PKG-15601/PKG-2624 — finish conda-forge review alignment

c7ef41e

Restore the cross-build pyc exclusion, remove the unsupported profraw cleanup and stale lint suppression, and express cmake gating as a linter-compatible selector. Co-authored-by: Cursor <cursoragent@cursor.com>

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PKG-15601 + PKG-2624 — CF-align freethreading and debug build_type - #233

PKG-15601 + PKG-2624 — CF-align freethreading and debug build_type#233
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py315b3-cf-align

skupr-anaconda commented Jul 6, 2026

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skupr-anaconda commented Jul 7, 2026 •

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		- rm -f default.profraw # [osx]
		- test ! -f default.profraw # [osx]

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skupr-anaconda commented Jul 6, 2026

Summary

Linter

Test plan

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skupr-anaconda commented Jul 7, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Staging artifact check — 5b800b4

Matrix (platform outputs)

Repodata vs recipe

Prefix layout (tarball inspection)

Intentional divergences (unchanged)

Notes

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skupr-anaconda commented Jul 7, 2026 •

edited

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Staging artifact check — `5b800b4`