Build failure: python313Packages.bcrypt

[blitz]

Nixpkgs version

• Unstable (26.05)

Steps to reproduce

I use nixpkgs 80e4adb

nix-repl> pkgs = import ./. { crossSystem = "aarch64-linux"; }
Added pkgs.

nix-repl> :b pkgs.runCommand "foo" { nativeBuildInputs = [ pkgs.black ]; } "black --version ; echo foo > $out"
error: builder for '/nix/store/4pd2n5w7jyk2jp4w26xbz4rpi80jaipf-python3.13-bcrypt-5.0.0.drv' failed with exit code 1;
       last 25 log lines:
       >   cargo:rustc-check-cfg=cfg(py_sys_config, values("Py_DEBUG", "Py_REF_DEBUG", "Py_TRACE_REFS", "COUNT_ALLOCS"))
       >   cargo:rustc-check-cfg=cfg(pyo3_disable_reference_pool)
       >   cargo:rustc-check-cfg=cfg(pyo3_leak_on_drop_without_reference_pool)
       >   cargo:rustc-check-cfg=cfg(Py_3_7)
       >   cargo:rustc-check-cfg=cfg(Py_3_8)
       >   cargo:rustc-check-cfg=cfg(Py_3_9)
       >   cargo:rustc-check-cfg=cfg(Py_3_10)
       >   cargo:rustc-check-cfg=cfg(Py_3_11)
       >   cargo:rustc-check-cfg=cfg(Py_3_12)
       >   cargo:rustc-check-cfg=cfg(Py_3_13)
       >   cargo:rustc-check-cfg=cfg(Py_3_14)
       >   cargo:rustc-check-cfg=cfg(Py_3_15)
       >   cargo:rerun-if-env-changed=PYO3_CROSS
       >   cargo:rerun-if-env-changed=PYO3_CROSS_LIB_DIR
       >   cargo:rerun-if-env-changed=PYO3_CROSS_PYTHON_VERSION
       >   cargo:rerun-if-env-changed=PYO3_CROSS_PYTHON_IMPLEMENTATION
       >   cargo:rerun-if-env-changed=PYO3_NO_PYTHON
       >   cargo:rerun-if-env-changed=_PYTHON_SYSCONFIGDATA_NAME
       >
       >   --- stderr
       >   error: Could not find _sysconfigdata*.py in /nix/store/v8zkgmgm76scj31fhiax4mmxw7cnh5sy-python3-aarch64-unknown-linux-gnu-3.13.11/lib/python3.13
       > warning: build failed, waiting for other jobs to finish...
       > error: `cargo rustc --lib --message-format=json-render-diagnostics --manifest-path src/_bcrypt/Cargo.toml --target x86_64-unknown-linux-gnu --release -v --features pyo3/extension-module --crate-type cdylib --` failed with code 101
       >
       > ERROR Backend subprocess exited when trying to invoke build_wheel
       For full logs, run 'nix log /nix/store/4pd2n5w7jyk2jp4w26xbz4rpi80jaipf-python3.13-bcrypt-5.0.0.drv'.
error: 1 dependencies of derivation '/nix/store/ddmhc70py1mkh267zyv3shg1rxh0pb1z-python3.13-paramiko-4.0.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/kfn06dmqcxri17dazhgxkkpm71qkmk8g-python3.13-cryptography-46.0.3.drv' failed to build
error: 1 dependencies of derivation '/nix/store/znb8wiv7a9s838sm2sbf58afy17fxqph-python3.13-proxy-py-2.4.10.drv' failed to build
error: 1 dependencies of derivation '/nix/store/bhx7187agy0ffs1za6pvr7dpym0a30z8-python3.13-trustme-1.2.1.drv' failed to build
error: 1 dependencies of derivation '/nix/store/dgknqsi1y79m85wkm8imb5ywsv4rpnbl-python3.13-pyopenssl-25.1.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/wjragbl113z3i4kszgbpv0djldsa6qbx-python3.13-service-identity-24.2.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/r9dnl6asmdm932palb9iplk1knffifc0-python3.13-werkzeug-3.1.3.drv' failed to build
error: 2 dependencies of derivation '/nix/store/0bagcjz7ffdrbj1cv1gb9wqbd80bv48b-python3.13-aiohttp-3.13.2.drv' failed to build
error: 1 dependencies of derivation '/nix/store/j1azly0wm6lc9a7fmhph5w38vki4i118-python3.13-httpx-0.28.1.drv' failed to build
error: 2 dependencies of derivation '/nix/store/zyzs4vbgnz8qjmw7l6dvznkm09kr9s8f-python3.13-trio-0.32.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/iv5jpnxsiw84ia5qqbakhi5lj443fw29-python3.13-anyio-4.12.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/6jwqra2hpwy7l8d517ww0d87ywfcby06-python3.13-uvloop-0.22.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/8npz9pw6z7kxlc3cp5gakhbnvpxsg5kw-python3.13-httpbin-0.10.2.drv' failed to build
error: 1 dependencies of derivation '/nix/store/zf4929c7bbi43g8iy8s92rf89nzg88vl-python3.13-flasgger-0.9.7.1.drv' failed to build
error: 1 dependencies of derivation '/nix/store/354y2wfpr9f35ihkcw7s79sy05i3cb5z-python3.13-flask-3.1.2.drv' failed to build
error: 2 dependencies of derivation '/nix/store/10j0hs1g55ka44qkwzgb7j0mm96pxj8l-python3.13-black-25.1.0.drv' failed to build
error: 2 dependencies of derivation '/nix/store/b68xcw08az9fwbinmzdnz96q3rpn87dl-python3.13-httpcore-1.0.9.drv' failed to build
error: 1 dependencies of derivation '/nix/store/d95c0f0daa42xwgbp1x3gxghri0jnacm-python3.13-pytest-trio-0.8.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/3zchggk4gyj1r15ijmgczxr8d632akld-python3.13-pytest-httpbin-2.1.0.drv' failed to build
error: 1 dependencies of derivation '/nix/store/yfxfjplva3bxhha27lbl01yj96kc4y1w-foo.drv' failed to build

Can Hydra reproduce this build failure?

Hydra doesn’t try to build the package.

Link to Hydra build job

No response

Relevant log output

See above.

Additional context

This pops up when cross-compiling systemd-repart images with the repart module, because it will use black in modules/nixos/image/repart-image.nix to format amend-repart-definitions.py.

System metadata

fetching path input 'path:/nix/store/d73asqiyrdzcchk6dzw9aq134dlp1yzm-source'
 - system: `"x86_64-linux"`
 - host os: `Linux 6.12.66, NixOS, 26.05 (Yarara), 26.05.20260121.88d3861`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Lix, like Nix) 2.93.3
System type: x86_64-linux
Additional system types: aarch64-linux, i686-linux
Features: gc, signed-caches
System configuration file: /etc/nix/nix.conf
User configuration files: /home/julian/.config/nix/nix.conf:/etc/xdg/nix/nix.conf:/home/julian/.nix-profile/etc/xdg/nix/nix.conf:/nix/profile/etc/xdg/nix/nix.conf:/home/julian/.local/state/nix/profile/etc/xdg/nix/nix.conf:/etc/profiles/per-user/julian/etc/xdg/nix/nix.conf:/nix/var/nix/profiles/default/etc/xdg/nix/nix.conf:/run/current-system/sw/etc/xdg/nix/nix.conf
Store directory: /nix/store
State directory: /nix/var/nix
Data directory: /nix/store/hz1f5nibclwljprc90zjb8rk42hjmh2z-lix-2.93.3/share`
 - channels(root): `""`
 - nixpkgs: `/nix/store/d73asqiyrdzcchk6dzw9aq134dlp1yzm-source`

Notify maintainers

@dotlambda @nikstur

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[samueldr-at-cyberus]

Caused by buildPackages.python3Packages.bcrypt having a wrongly spliced-in (AFAIUI) python.

[nix-shell:~/tmp/nixpkgs/nixos-unstable]$ nix-diff --color never --line-oriented "$(nix-instantiate --attr python313Packages.bcrypt)" "$(nix-instantiate --attr pkgsCross.aarch64-multiplatform.buildPackages.python313Packages.bcrypt)"
- /nix/store/fjrb36r2h0gxcbmlli3bgh3gy3q757gy-python3.13-bcrypt-5.0.0.drv:{out}
+ /nix/store/4pd2n5w7jyk2jp4w26xbz4rpi80jaipf-python3.13-bcrypt-5.0.0.drv:{out}
• The input derivation named `python3.13-setuptools-rust-1.12.0` differs
  - /nix/store/1m97wyzbp60xwbffarh5hi71j5pkfyiq-python3.13-setuptools-rust-1.12.0.drv:{out}
  + /nix/store/q9zhpb4gn6slrzy8z67ah99h25phrrbf-python3.13-setuptools-rust-1.12.0.drv:{out}
  • The input derivation named `setuptools-rust-hook.sh` differs
    - /nix/store/yq7fcbr5r8k6k1fnbw9cgqgkw673gqpf-setuptools-rust-hook.sh.drv:{out}
    + /nix/store/6clg9bba4c6lf4laxp7bj8i6zk8g78fn-setuptools-rust-hook.sh.drv:{out}
    • The set of input derivation names do not match:
        - python3-3.13.11
        + python3-aarch64-unknown-linux-gnu-3.13.11
    • The environments do not match:
        buildPhase=''
          runHook preBuild
        
          target=$out
          if test -n "$dir"; then
              target=$out/$dir/$name
              mkdir -p $out/$dir
          fi
        
        - substitute "$src" "$target" --replace-fail @cargoBuildTarget@ x86_64-unknown-linux-gnu --replace-fail @cargoLinkerVar@ X86_64_UNKNOWN_LINUX_GNU --replace-fail @pyLibDir@ /nix/store/qzc04a3npl70cyyy6flnnrb2ig3kayxm-python3-3.13.11/lib/python3.13 --replace-fail @targetLinker@ /nix/store/r9wbjib6xxjkyb9yvjvrkl4sq61i2lyn-gcc-wrapper-15.2.0/bin/cc
        
        + substitute "$src" "$target" --replace-fail @cargoBuildTarget@ x86_64-unknown-linux-gnu --replace-fail @cargoLinkerVar@ X86_64_UNKNOWN_LINUX_GNU --replace-fail @pyLibDir@ /nix/store/v8zkgmgm76scj31fhiax4mmxw7cnh5sy-python3-aarch64-unknown-linux-gnu-3.13.11/lib/python3.13 --replace-fail @targetLinker@ /nix/store/r9wbjib6xxjkyb9yvjvrkl4sq61i2lyn-gcc-wrapper-15.2.0/bin/cc
        
          if test -n "$isExecutable"; then
              chmod +x $target
          fi
        
          runHook postBuild
    ''
  • Skipping environment comparison
• Skipping environment comparison

[nix-shell:~/tmp/nixpkgs/nixos-unstable]$ nix repl -f .
Lix 2.93.3
Type :? for help.
Loading installable ''...
Added 25867 variables.
nix-repl> pkgs.python3Packages.bcrypt == pkgs.pkgsCross.aarch64-multiplatform.buildPackages.python3Packages.bcrypt
false

Bisected down to:

• 9566862

Using the last release channel bump commit that worked as a comparison (c0b0e0f):

[nix-shell:~/tmp/nixpkgs/nixos-unstable]$ nix-diff --color never --line-oriented "$(nix-instantiate --attr python313Packages.bcrypt)" "$(nix-instantiate --attr pkgsCross.aarch64-multiplatform.buildPackages.python313Packages.bcrypt)" 
warning: you did not specify '--add-root'; the result might be removed by the garbage collector
warning: you did not specify '--add-root'; the result might be removed by the garbage collector

[nix-shell:~/tmp/nixpkgs/nixos-unstable]$ nix repl -f .
Lix 2.93.3
Type :? for help.
Loading installable ''...
Added 25629 variables.
nix-repl> pkgs.python3Packages.bcrypt == pkgs.pkgsCross.aarch64-multiplatform.buildPackages.python3Packages.bcrypt 
true

[samueldr-at-cyberus]

Staging (most likely) works.

See:

• python3Packages.setuptools-rust: fix python version inconsistency #473299 (review)
• python3Packages.setuptools-rust: add back splice fix #474096

(I haven't bisected the fix, but from context, there's no reason to think it's not that.)

~/tmp/nixpkgs/staging $ git checkout -B staging NixOS/staging
branch 'staging' set up to track 'NixOS/staging'.
Reset branch 'staging'
Your branch is up to date with 'NixOS/staging'.

~/tmp/nixpkgs/staging $ nix repl -f .
Lix 2.93.3
Type :? for help.
Loading installable ''...
Added 26055 variables.
nix-repl> pkgs.python3Packages.bcrypt == pkgs.pkgsCross.aarch64-multiplatform.buildPackages.python3Packages.bcrypt
true

[samueldr-at-cyberus]

Looks like that (previously now marked outdated comment) was not the fix. The previously noted commit was actually already in unstable.

Though I guess this could be the relevant issue:

• python3: splices do not compose correctly #476822

I finally bisected the fix on staging (compared to staging-next) to:

• python3.pkgs.setuptools-rust: adjust setupHook inclusion condition #480005
• See also: python3.pkgs.setuptools-rust: adjust setupHook inclusion condition #480005 (comment)

[doronbehar]

@samueldr-at-cyberus I'm not sure I understand - are you experiencing this issue on branch master? Now that #482866 has reached master via #488406 ?

[blitz]

This problem is fixed on master. I just tested 46a8c22.

[doronbehar]

Thanks for confirming and closing the issue :)