136 lines
3.1 KiB
Plaintext
Executable File
136 lines
3.1 KiB
Plaintext
Executable File
#!/usr/bin/env nix-shell
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#!nix-shell -i bash -p findutils -p nix-update
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NIX_FILES_TOP=/home/colin/nixos
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usage() {
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echo "update: update rev/hash for one or more packages"
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echo "usage: update [options] [attr-path]"
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echo ""
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echo "options:"
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echo "- --dry-run"
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echo "- --verbose"
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echo ""
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echo "examples:"
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echo "- update nixpkgs: update only the nixpkgs input"
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echo "- update sane: update every package under the 'sane' attribute"
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echo "- update: update everything i know how to update"
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exit 1
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}
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warn() {
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echo "$@"
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}
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info() {
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echo "$@"
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}
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debug() {
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if [ -n "$verbose" ]; then
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echo "$@"
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fi
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}
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hasEffect() {
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if [ -n "$dryRun" ]; then
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echo "dry-run: skip $@"
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else
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eval "$@"
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fi
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}
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# usage: getPkgs outVar prefix
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getPkgs() {
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local -n attrsArr="$1"
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local attrPrefix="$2"
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if [ -z "$attrPrefix" ]; then
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attrPrefix=sane
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fi
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# # nix-env doesn't seem to build anything when evaluating queries,
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# # but since i use Import From Derivation along paths which i also want to query,
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# # then i need to ensure those derivations are available for import.
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# debug "creating requisite .drv store paths"
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# nix-instantiate -A nix "$NIX_FILES_TOP"
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# nix-instantiate -A nixpkgs-bootstrap.master "$NIX_FILES_TOP"
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debug "querying packages to update as part of '$attrPrefix'"
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local attrs=$(nix eval --raw -f "$NIX_FILES_TOP" 'updateTargets."'"$attrPrefix"'"' --apply 'builtins.concatStringsSep " "')
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debug "got: $attrs"
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attrsArr+=($attrs)
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}
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updateOnePkg() {
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local attrPath="$1"
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local updateScript=$(nix eval --raw -f "$NIX_FILES_TOP" 'updateScripts."'"$attrPath"'"')
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if [ -z "$updateScript" ]; then
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warn "don't know how to update '$attrPath'"
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return
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fi
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# make sure everything needed to invoke the update script exists in-store
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local context=$(nix eval --raw -f "$NIX_FILES_TOP" 'updateScripts."'"$attrPath"'"' --apply 's: builtins.concatStringsSep " " (builtins.attrNames (builtins.getContext s))')
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for c in $context; do
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debug "realizing updateScript requisite: $context"
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nix-store --realize "$c" || true
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done
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info "updating: '$attrPath'"
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debug "$updateScript"
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"$updateScript"
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}
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updatePkgsInParallel() {
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debug "updating packages in parallel using xargs"
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debug "- $@"
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debug "- xargs -n 1 -P 4 $0 ${scriptFlags[*]}"
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echo "$@" | xargs -n 1 -P 4 "$0" "${scriptFlags[@]}"
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}
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scriptFlags=()
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dryRun=
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toplevelsToUpdate=()
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verbose=
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parseArgs() {
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while [ "$#" -ne 0 ]; do
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local arg=$1
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shift
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case "$arg" in
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(--help)
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usage
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;;
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(--dry-run)
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scriptFlags+=(--dry-run)
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dryRun=1
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;;
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(--verbose)
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scriptFlags+=(--verbose)
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verbose=1
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;;
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(*)
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toplevelsToUpdate+=("$arg")
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;;
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esac
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done
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if [ "${#toplevelsToUpdate[@]}" -eq 0 ]; then
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toplevelsToUpdate=(sane)
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fi
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}
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parseArgs "$@"
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pkgsToUpdate=()
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for t in "${toplevelsToUpdate[@]}"; do
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getPkgs pkgsToUpdate "$t"
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done
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case "${#pkgsToUpdate[@]}" in
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(0)
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echo "nothing to do"
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;;
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(1)
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hasEffect updateOnePkg "${pkgsToUpdate[0]}"
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;;
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(*)
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hasEffect updatePkgsInParallel "${pkgsToUpdate[@]}"
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;;
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esac
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