pixi add a command line app from within a pixi shell is not immediately available

[synapticarbors]

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

❯ pixi init test1
✔ Initialized project in /Users/xyz/opt/pixienvs/test1
❯ which rg
/Users/xyz/.pixi/bin/rg
❯ rg --version
ripgrep 14.1.0

features:-simd-accel,+pcre2
simd(compile):+SSE2,+SSSE3,-AVX2
simd(runtime):+SSE2,+SSSE3,+AVX2

PCRE2 10.42 is available (JIT is available)
❯ cd test1
❯ pixi shell
 . "/var/folders/ld/gx_9s3_n55g1dkhj59zjlxww0000gn/T/pixi_env_OJF.sh"
❯  . "/var/folders/ld/gx_9s3_n55g1dkhj59zjlxww0000gn/T/pixi_env_OJF.sh"
❯ which rg
/Users/xyz/.pixi/bin/rg
❯ pixi add "ripgrep=14.0.3"
✔ Added ripgrep=14.0.3
❯ which rg
/Users/xyz/.pixi/bin/rg
❯ ls -l .pixi/envs/default/bin/rg
-rwxrwxr-x  1 xyz  staff  5142352 Dec  4 06:44 .pixi/envs/default/bin/rg
❯ rg --version
ripgrep 14.1.0

features:-simd-accel,+pcre2
simd(compile):+SSE2,+SSSE3,-AVX2
simd(runtime):+SSE2,+SSSE3,+AVX2

PCRE2 10.42 is available (JIT is available)
❯ exit
❯ pixi shell
 . "/var/folders/ld/gx_9s3_n55g1dkhj59zjlxww0000gn/T/pixi_env_J4t.sh"
❯  . "/var/folders/ld/gx_9s3_n55g1dkhj59zjlxww0000gn/T/pixi_env_J4t.sh"
❯ which rg
/Users/xyz/opt/pixienvs/test1/.pixi/envs/default/bin/rg
❯ rg --version
ripgrep 14.0.3

features:-simd-accel,+pcre2
simd(compile):+SSE2,+SSSE3,-AVX2
simd(runtime):+SSE2,+SSSE3,+AVX2

PCRE2 10.42 is available (JIT is available)

Issue description

If you pixi add a command line tool (in this example ripgrep), while in a pixi shell for that project, the tool is not immediately available even though it's on $PATH. In the example I gave above, I have ripgrep installed in a global environment, and that continues to be one that's available after I get a different version using pixi add, even though it should take precedence in the path, which is:

echo $PATH
/Users/xyz/opt/pixienvs/test1/.pixi/envs/default/bin:...<lots of other stuff>...:/Users/xyz/.pixi/bin

I have to exit the pixi shell and then restart it before I get access to the one that is in that environment.

I discovered this with pip, when I was trying to do an editable install. I had forgotten to add pip to my environment, so when I was in the pixi shell, I ran pixi add pip and then pip install -e ., and the package ended up in a different environment (actually a conda environment that I had activated before starting the shell).

Expected behavior

If I'm in a pixi shell and add a command line tool, it should be immediately available since it's on the $PATH in a bin directory with highest precedence.

[wolfv]

This is a duplicate of #326

I think we need to add a "hook" to call re-source the shell (or re-hash) after an installation, indeed.

[wolfv]

I am closing this for now as it should be (partially) fixed with the next release. I've also added a new issue for a more complete fix here: #1018