[Error] FPATH, ZSH, oh-my-zsh, distrobox breaks shell together

[lpuv]

Describe the bug
Using oh-my-zsh on the host and trying to enter into a container will error out because FPATH is messed up somehow. The workaround is that once in the container, you must unset FPATH; zsh.
To Reproduce

1. Install ZSH and oh-my-zsh on the host
2. Enter into a container
3. broken

Expected behavior
No errors. Using bash works fine.

Logs

/home/luna/.oh-my-zsh/oh-my-zsh.sh:127: compinit: function definition file not found
/home/luna/.oh-my-zsh/oh-my-zsh.sh:150: zrecompile: function definition file not found
/home/luna/.oh-my-zsh/lib/async_prompt.zsh:144: add-zsh-hook: function definition file not found
/home/luna/.oh-my-zsh/lib/completion.zsh:78: bashcompinit: function definition file not found
/home/luna/.oh-my-zsh/lib/directories.zsh:34: command not found: compdef
/home/luna/.oh-my-zsh/lib/git.zsh:49: is-at-least: function definition file not found
/home/luna/.oh-my-zsh/lib/termsupport.zsh:108: add-zsh-hook: function definition file not found
/home/luna/.oh-my-zsh/lib/termsupport.zsh:109: add-zsh-hook: function definition file not found
/home/luna/.oh-my-zsh/lib/termsupport.zsh:163: add-zsh-hook: function definition file not found
/home/luna/.oh-my-zsh/lib/theme-and-appearance.zsh:2: colors: function definition file not found
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:101: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:183: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:211: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:218: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:223: is-at-least: function definition file not found
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:248: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:275: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:291: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:302: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:305: is-at-least: function definition file not found
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:313: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:316: is-at-least: function definition file not found
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:332: command not found: compdef
/home/luna/.oh-my-zsh/plugins/git/git.plugin.zsh:380: is-at-least: function definition file not found
/home/luna/.oh-my-zsh/custom/plugins/zsh-autosuggestions/zsh-autosuggestions.zsh:859: is-at-least: function definition file not found
/home/luna/.oh-my-zsh/custom/plugins/zsh-autosuggestions/zsh-autosuggestions.zsh:864: add-zsh-hook: function definition file not found
/home/luna/.oh-my-zsh/custom/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh:105: is-at-least: function definition file not found
/home/luna/.oh-my-zsh/custom/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh:420: is-at-least: function definition file not found
zsh-syntax-highlighting: Failed to load add-zsh-hook. Some speed optimizations will not be used.
zsh-syntax-highlighting: failed loading add-zsh-hook.
zsh-syntax-highlighting: failed loading add-zsh-hook.
/home/luna/.oh-my-zsh/plugins/dirhistory/dirhistory.plugin.zsh:61: add-zsh-hook: function definition file not found
(eval):90: add-zsh-hook: function definition file not found
(eval):91: add-zsh-hook: function definition file not found

Desktop (please complete the following information):
I am using podman version 5.2.5, and distrobox version 1.6.0.1 on Fedora Silverblue 41, using the RPM package for distrobox.

[jgroman]

I had the same problem. After some troubleshooting turns out in my case the problem was caused by shell FPATH variable being exported in .zshrc on host. Some installer script added these two lines at the beginning of my host .zshrc:

# Add deno completions to search path
if [[ ":$FPATH:" != *":/home/user/.zsh/completions:"* ]]; then export FPATH="/home/user/.zsh/completions:$FPATH"; fi

Exporting makes FPATH environment variable and as such it is later picked up by distrobox and imported into guest shell where it breaks the default "built-in" fpath.

Seems that exporting FPATH is not necessary (https://unix.stackexchange.com/questions/774317/why-is-fpath-not-listed-in-env-output) so as a workaround you could try to make sure FPATH is not exported in your .zshrc (or anywhere else) before invoking distrobox-enter.

I suppose the proper fix would be for distrobox to ignore FPATH environment variable.

[jgroman]

Please see PR #1636

[lpuv]

thank you @jgroman! hope it gets merged!