Ability to not error, or ignore error on installing existing version

[halkeye]

Is your feature request related to a problem? Please describe

Trying to update my ansible script to the new golang version
I'm getting exit code 1 on a rerun cause the version is already installed

$  asdf install nodejs 21.7.1; echo $?
Trying to update node-build... ok
To follow progress, use 'tail -f /tmp/node-build.20250131120719.1442300.log' or pass --verbose
Downloading node-v21.7.1-linux-x64.tar.gz...
-> https://nodejs.org/dist/v21.7.1/node-v21.7.1-linux-x64.tar.gz

WARNING: node-v21.7.1-linux-x64 is past its end of life and is now unsupported.
It no longer receives bug fixes or security updates.

Installing node-v21.7.1-linux-x64...
Installed node-v21.7.1-linux-x64 to /home/halkeye/.asdf/installs/nodejs/21.7.1

Installing the following default packages globally: yarn, jsonlint, neovim, serve, vim-language-server, bash-language-server, @devcontainers/cli
npm WARN deprecated [email protected]: Package no longer supported. Contact [email protected] for more info.

added 171 packages in 5s

30 packages are looking for funding
  run `npm fund` for details
0

$ asdf install nodejs 21.7.1; echo $?
error installing version: version {version 21.7.1} of nodejs is already installed
1

Describe the proposed solution

Either have https://github.com/asdf-vm/asdf/blob/master/internal/versions/versions.go#L127 be a warning not an error
or add a flag for --ignore-already-installed or something

Describe similar asdf features and why they are not sufficient

n/a

Describe other workarounds you've considered

I can do "|| true" but that'll ignore all errors

[vladlosev]

We use asdf to install required tools in our CI workflows, and is such automated situation the use of the right exit code to indicate a success of operation is critical. As it is, currently we cannot upgrade to v0.16 for this reason.