bug(tasks): environment variables broken when defined in surrounding scope #3801
Description
1. Issue description
Checks
- I have checked that this issue has not already been reported.
- I have confirmed this bug exists on the latest version of pixi, using
pixi --version.
Reproducible example
Consider the following pixi.toml:
[workspace]
authors = ["Christian Bourjau <[email protected]>"]
channels = ["conda-forge"]
name = "pixi-cmake_args-debug"
platforms = ["osx-arm64"]
version = "0.1.0"
[tasks.foo]
cmd = "echo $CMAKE_ARGS"
[tasks.foo.env]
CMAKE_ARGS = "foo"
[dependencies]
# c-compiler sets CMAKE_ARGS in activation script
c-compiler = ">=1.9.0,<2"Executing the foo task in a shell (zsh in my case) that does not have CMAKE_ARGS set works as expected (i.e. CMAKE_ARGS is set to the explicit value):
$ pixi run foo
✨ Pixi task (foo): echo $CMAKE_ARGS
foo
However, if CMAKE_ARGS is already set to something else in the executing environment, I observe the following unexpected behavior, where neither the outer nor the explicitly set value is used. Instead, the value from one of the dependencies activation scripts is used:
$ CMAKE_ARGS=bar pixi run foo
✨ Pixi task (foo): echo $CMAKE_ARGS
-DCMAKE_AR=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-ar -DCMAKE_CXX_COMPILER_AR=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-ar -DCMAKE_C_COMPILER_AR=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-ar -DCMAKE_RANLIB=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-ranlib -DCMAKE_CXX_COMPILER_RANLIB=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-ranlib -DCMAKE_C_COMPILER_RANLIB=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-ranlib -DCMAKE_LINKER=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-ld -DCMAKE_STRIP=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-strip -DCMAKE_INSTALL_NAME_TOOL=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-install_name_tool -DCMAKE_LIBTOOL=/Users/c.bourjau/debug/pixi-cmake_args-debug/.pixi/envs/default/bin/arm64-apple-darwin20.0.0-libtool -DCMAKE_BUILD_TYPE=Release -DCMAKE_OSX_SYSROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
Issue description
I am observing this in zsh on MacOS
Expected behavior
I would expect the explicit value from the toml file to be used regardless of variables in the outer environment or values from activation scripts of dependencies.