uv fails to install apache airflow

[gmolau]

Fresh uv install, fresh venv, trying to add the first dependency, fails:

❯ which uv
/opt/homebrew/bin/uv

❯ uv version
uv 0.5.21 (Homebrew 2025-01-17)

❯ uv python find
<project-dir>/.venv/bin/python3

❯ uv add apache-airflow
Resolved 139 packages in 33ms
  × Failed to build `google-re2==1.1.20240702`
  ├─▶ The build backend returned an error
  ╰─▶ Call to `setuptools.build_meta:__legacy__.build_wheel` failed (exit status: 1)

      [stdout]
      running bdist_wheel
      running build
      running build_py
      copying re2/__init__.py -> build/lib.macosx-11.0-arm64-cpython-313/re2
      running build_ext
      building '_re2' extension
      c++ -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -arch arm64 -mmacosx-version-min=11.0 -Wno-nullability-completeness -Wno-expansion-to-defined
      -Wno-undef-prefix -fPIC -I/Users/gmolau/.cache/uv/builds-v0/.tmpqhwwua/include -I/Users/gmolau/.local/share/uv/python/cpython-3.13.1-macos-aarch64-none/include/python3.13 -c _re2.cc -o
      build/temp.macosx-11.0-arm64-cpython-313/_re2.o -fvisibility=hidden

      [stderr]
      _re2.cc:15:10: fatal error: 'absl/strings/string_view.h' file not found
         15 | #include "absl/strings/string_view.h"
            |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      error: command '/usr/bin/c++' failed with exit code 1

      hint: This usually indicates a problem with the package or the build environment.
  help: `google-re2` (v1.1.20240702) was included because `<project>` (v0.1.0) depends on `apache-airflow` (v2.10.4) which depends on `google-re2`

[charliermarsh]

This isn't a uv error -- this is an error on your machine, in trying to build google-re2 from scratch. That project likely doesn't ship wheels for Python 3.13. I'd suggest using Python 3.12.

[gmolau]

Thanks, with 3.12 it works. I guess the relevant upstream issue is google/re2#516