fix an error in macos ci

[cxzhong]

Uninstall cmake before installing dependencies. fix an error in https://github.com/sagemath/sage/actions/runs/17527169455/job/49779204903

📝 Checklist

• The title is concise and informative.
• The description explains in detail what this PR is about.
• I have linked a relevant issue or discussion.
• I have created tests covering the changes.
• I have updated the documentation and checked the documentation preview.

⌛ Dependencies

actions/runner-images#12912

[cxzhong]

And you can see this issue actions/runner-images#12912

[Copilot]

Pull Request Overview

This PR fixes a macOS CI error by adding a command to uninstall cmake before installing dependencies. The change addresses a specific CI failure where conflicting cmake installations were causing build issues.

• Adds a forced uninstall of cmake before dependency installation in the macOS CI workflow

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[tobiasdiez]

Thanks.

Could you please add a short comment linking the above gh issue? Feel free to set to positive review after the CI is green.

[github-actions]

Documentation preview for this PR (built with commit 244d0e1; changes) is ready! 🎉
This preview will update shortly after each push to this PR.

[cxzhong]

https://github.com/sagemath/sage/actions/runs/17540857013/job/49812147119#annotation:6:59806
But I do not know how to fix the building. @tobiasdiez

[tobiasdiez]

Okay, but it's failing at a later point - so this is already a nice improvement.

For reference:

[sagelib-10.8.beta2]   [spkg-install]   FAILED: [code=1] src/sage/libs/eclib/mwrank.cpython-312-darwin.so
  [sagelib-10.8.beta2]   [spkg-install]   g++ -std=gnu++11 -std=gnu++11  -o src/sage/libs/eclib/mwrank.cpython-312-darwin.so src/sage/libs/eclib/mwrank.cpython-312-darwin.so.p/meson-generated_src_sage_libs_eclib_mwrank.pyx.cpp.o -L/Users/runner/work/sage/sage/local/lib -Wl,-dead_strip_dylibs -Wl,-headerpad_max_install_names -Wl,-undefined,dynamic_lookup -bundle -Wl,-undefined,dynamic_lookup -Wl,-ld_classic -g -O2 -Wl,-rpath,@loader_path/../../../../../../local/lib -Wl,-rpath,/usr/local/Cellar/flint/3.3.1/lib -Wl,-rpath,/usr/local/Cellar/mpfr/4.2.2/lib -Wl,-rpath,/usr/local/Cellar/gmp/6.3.0/lib /Users/runner/work/sage/sage/local/lib/libec.dylib -lecl /usr/local/Cellar/flint/3.3.1/lib/libflint.dylib /usr/local/Cellar/mpfr/4.2.2/lib/libmpfr.dylib /usr/local/Cellar/gmp/6.3.0/lib/libgmp.dylib
  [sagelib-10.8.beta2]   [spkg-install]   ld: illegal thread local variable reference to regular symbol __ZN3NTL2RR4precE for architecture x86_64
  [sagelib-10.8.beta2]   [spkg-install]   clang: error: linker command failed with exit code 1 (use -v to see invocation)

https://github.com/sagemath/sage/actions/runs/17540857013/job/49812147119#step:6:59711

[tobiasdiez]

is this really needed, or was this a result of you trying to fix the build?

[cxzhong]

Yes, I want to fix it, but it seems useless

[tobiasdiez]

Okay, then I would propose you remove this change here again, add a short comment to actions/runner-images#12912 and then we merge this, leaving the real build errors for another PR.

[cxzhong]

Okay, but it's failing at a later point - so this is already a nice improvement.

For reference:

[sagelib-10.8.beta2]   [spkg-install]   FAILED: [code=1] src/sage/libs/eclib/mwrank.cpython-312-darwin.so
  [sagelib-10.8.beta2]   [spkg-install]   g++ -std=gnu++11 -std=gnu++11  -o src/sage/libs/eclib/mwrank.cpython-312-darwin.so src/sage/libs/eclib/mwrank.cpython-312-darwin.so.p/meson-generated_src_sage_libs_eclib_mwrank.pyx.cpp.o -L/Users/runner/work/sage/sage/local/lib -Wl,-dead_strip_dylibs -Wl,-headerpad_max_install_names -Wl,-undefined,dynamic_lookup -bundle -Wl,-undefined,dynamic_lookup -Wl,-ld_classic -g -O2 -Wl,-rpath,@loader_path/../../../../../../local/lib -Wl,-rpath,/usr/local/Cellar/flint/3.3.1/lib -Wl,-rpath,/usr/local/Cellar/mpfr/4.2.2/lib -Wl,-rpath,/usr/local/Cellar/gmp/6.3.0/lib /Users/runner/work/sage/sage/local/lib/libec.dylib -lecl /usr/local/Cellar/flint/3.3.1/lib/libflint.dylib /usr/local/Cellar/mpfr/4.2.2/lib/libmpfr.dylib /usr/local/Cellar/gmp/6.3.0/lib/libgmp.dylib
  [sagelib-10.8.beta2]   [spkg-install]   ld: illegal thread local variable reference to regular symbol __ZN3NTL2RR4precE for architecture x86_64
  [sagelib-10.8.beta2]   [spkg-install]   clang: error: linker command failed with exit code 1 (use -v to see invocation)

https://github.com/sagemath/sage/actions/runs/17540857013/job/49812147119#step:6:59711

The root cause has been fixed now. Can you test it? @tobiasdiez