It looks like on AIX, cargo/rustc are not installed into /opt/freeware/bin so are not on the PATH, e.g. https://ci.nodejs.org/job/node-test-commit-aix/61998/nodes=aix72-power9/console

It looks like they are in /opt/freeware/lib/RustSDK/1.88/bin. We either need to:

• Add this path to the PATH in the Jenkins start script:

  build/ansible/roles/jenkins-worker/templates/aix.rc2.j2

  Line 20 in 522b933

  export PATH="/opt/freeware/bin:/usr/opt/python3/bin/:$PATH"; \

• Add the path into select-compiler.sh for AIX.
• Export CARGO and RUSTC environment variables in select-compiler.sh for AIX with fully qualified paths to cargo/rustc.
• Create symlinks in /opt/freeware/bin to cargo/rustc (i.e. the symlinks would be on the PATH).

As I'm sure you'd agree, none of these options are good :'(

I guess that since the version is hardcoded to 1.88 we could legitimately use any of those. I might lean towards the symlinks (mostly to make any manual building/debugging on the machine easier) although I do wonder if there was a good reason the package maintainer decided to keep it isolated like this and not include a symlink.

I'm ok with creating the symlinks, just wondering where would best spot to do so in the playbooks? I guess I could do that in select-compiler.sh or the AIX Jenkins start script.

As I'm sure you'd agree, none of these options are good :'(
I guess that since the version is hardcoded to 1.88 we could legitimately use any of those. I might lean towards the symlinks (mostly to make any manual building/debugging on the machine easier) although I do wonder if there was a good reason the package maintainer decided to keep it isolated like this and not include a symlink.

I'm ok with creating the symlinks, just wondering where would best spot to do so in the playbooks? I guess I could do that in select-compiler.sh or the AIX Jenkins start script.

Don't create symlinks in select-compiler.sh -- We only want to set env variables in there (e.g. setting PATH). If you opt for symlinks, create a new aix.yml in ansible/roles/baselayout/tasks/partials/postinstall which gets run after the package installs by

Can we merge this and #4286 ?

FWIW https://ci.nodejs.org/job/node-test-commit-aix/62159/nodes=aix72-power9/consoleFull shows that

• cargo/rustc were picked up

15:31:26 python3 ./configure --verbose  --dest-cpu=ppc64
15:31:26 Node.js configure: Found Python 3.12.13...
15:31:26 Detected C++ compiler (CXX=g++-12) version: 12.3.0
15:31:26 WARNING: C++ compiler (CXX=g++-12, 12.3.0) too old, need g++ 13.2.0 or clang++ 19.1.0
15:31:26 Detected C compiler (CC=gcc-12) version: 12.3.0
15:31:26 Detected cargo (CARGO=cargo): 1.88.0
15:31:26 Detected rustc (RUSTC=rustc): 1.88.0

• crates built

15:37:13    Compiling temporal_rs v0.1.0
...
15:37:18    Compiling temporal_capi v0.1.0

• temporal tests passed

17:39:32 ok 3787 parallel/test-temporal
17:39:32   ---
17:39:32   duration_ms: 258.07900
17:39:32   ...
...
17:39:32 ok 3789 parallel/test-temporal-with-zoneinfo
17:39:32   ---
17:39:32   duration_ms: 337.77000
17:39:32   ...