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Re: [PATCH] modutils completion: Fix FHS assumption
This Patch has been previously discussed at
https://gitlab.com/zsh-org/zsh/-/merge_requests/15 but Daniel Shahaf and
I wish to get more feedback as to whether this brakes and `modutils`
related command for anyone.
Basically, the $modules_dir is set just like before, but if
`/run/booted-system/kernel-modules/lib/modules` exists, it's being used
instead of the default `/lib/modules` - the 1st directory is the
directory used on NixOS and Guix.
This patch fixes an ugly error for NixOS and Guix utils which goes like
this:
$ modinfo <tab> _modutils:102: no such file or directory:
/lib/modules/5.6.15/modules.alias
On Mon, Jun 01, 2020 at 08:05:19PM +0300, doron.behar@xxxxxxxxx wrote:
> From: Doron Behar <doron.behar@xxxxxxxxx>
>
> ---
> Completion/Linux/Command/_modutils | 16 +++++++++++++++-
> 1 file changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/Completion/Linux/Command/_modutils b/Completion/Linux/Command/_modutils
> index ff6844f41..a0ed7b210 100644
> --- a/Completion/Linux/Command/_modutils
> +++ b/Completion/Linux/Command/_modutils
> @@ -12,7 +12,18 @@ _modules_caching_policy()
> _modutils() {
> local curcontext="$curcontext" expl state line modules modaliases ign args ret=1
> local -A opt_args
> - local -r modules_dir=/lib/modules
> + local -a possible_modules_dirs=(
> + # NixOS & possibly Guix
> + /run/booted-system/kernel-modules/lib/modules
> + # Mostly every other distro
> + /lib/modules
> + )
> + local modules_dir tested_modules_dir
> + for tested_modules_dir in "${possible_modules_dirs[@]}"; do
> + if [[ -d "$tested_modules_dir" ]]; then
> + modules_dir="$tested_modules_dir"
> + fi
> + done
>
> local update_policy
> zstyle -s ":completion:*:*:$service:*" cache-policy update_policy
> @@ -108,6 +119,9 @@ _modutils() {
> all-modules)
> local kver=${opt_args[(i)(-S|-k|--set-version)]:-$(uname -r)}
>
> + if [[ -z "$modules_dir" ]]; then
> + return
> + fi
I _think_ this addition will also gracefully catch the edge case of a
modules directory not found at all.
> if _cache_invalid modules-$kver || ! _retrieve_cache modules-$kver;
> then
> modules=( $modules_dir/$kver/(*~(source|build))/**/*.(o|ko|ko.gz|ko.xz)(.:t:r:r) )
> --
> 2.26.2
>
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