lsd provides shell completion files, but they are not generated by default. It is necessary to set the environment variable SHELL_COMPLETIONS_DIR when building lsd to generate them.

The following changes are required to add the completion files to the package:

- Prefix the cargo build line in the build function with the environment variable:

build() {
cd "$pkgname-$pkgver"
SHELL_COMPLETIONS_DIR=completions cargo build --release --locked
}

- Move the completion files to the shell completion directories in the package function:

# shell completions
install -Dm644 "completions/$pkgname.bash" "$pkgdir/usr/share/bash-completion/completions/$pkgname"
install -Dm644 "completions/$pkgname.fish" "$pkgdir/usr/share/fish/vendor_completions.d/$pkgname.fish"
install -Dm644 "completions/_$pkgname" "$pkgdir/usr/share/zsh/site-functions/_$pkgname"