run_once_setup_wsl2.sh.tmpl

#!/usr/bin/env bash
{{ if .is_wsl2 -}}

sudo apt update && sudo apt install -y \
    gnustep-gui-runtime \
    ;

# TODO: https://github.com/microsoft/WSL/issues/8943
# depends on kernel version, call exe on wsl2 filesystem is soooooooo slowly, so put on windows filesystem.
# clean: remove .exe from wsl2 fs if exists ...
# setup_wsl2_downloads.json hash: {{ include "files/setup_wsl2_downloads.json" | sha256sum }}
cat {{ joinPath .chezmoi.sourceDir "files/setup_wsl2_downloads.json" | quote }} |
    jq -c -r '.downloads[] | .exe // .url | split("/") | last' |
    xargs -I{} $SHELL -c 'exe_path=$(command -v {} 2>/dev/null) && [[ ! ${exe_path} =~ ^/mnt/.* ]] && echo "${exe_path} on wsl2. removing..." && sudo rm ${exe_path} || true'

# neovim with vscode + wsl2
# note: vscode-neovim won't load bashrc or profile, so put exe globally.
install_dir=$(wslpath $(wslvar USERPROFILE))/AppData/Local/bin
sudo mkdir -p $install_dir
cd $install_dir

# setup_wsl2_downloads.json hash: {{ include "files/setup_wsl2_downloads.json" | sha256sum }}
cat {{ joinPath .chezmoi.sourceDir "files/setup_wsl2_downloads.json" | quote }} |
    jq -c '.downloads[]' |
    while read -r download; do
        url=$(echo "${download}" | jq -r '.url')
        file=$(basename $url)
        checksum=$(echo "${download}" | jq -r '.sha1sum')
        exe=$(echo "${download}" | jq -r '.exe // .url | split("/") | last')

        if [ "${exe#*.}" != "exe" ]; then
            echo "exe: ${exe} must end with .exe. fill exe attribute on json element." >&2
            exit 1
        fi

        exists_checksum=$(test -f $exe && echo $(sha1sum $exe | cut -d ' ' -f 1 | tr -d ' ') || echo "")
        if [ "${checksum}" != "${exists_checksum}" ]; then
            echo "download: ${url}"
            curl -fsSLO $url

            extension="${file#*.}"
            case "${extension}" in
            "zip")
                unzip -p $file $exe | tee $exe >/dev/null
                ;;
            *) ;;
            esac

            exists_checksum=$(sha1sum $exe | cut -d ' ' -f 1 | tr -d ' ')
            [[ "${checksum}" != "${exists_checksum}" ]] &&
                echo "checksum verfication failed for ${exe}" >&2 && exit 1
        fi

        chmod a+x $exe
        command -v $exe &>/dev/null || echo "WARN: couldn't find [${exe}]. To resolve this, add [${install_dir}] to your user's PATH environment variable in Windows." >&2
    done

cd - &>/dev/null

{{- end -}}