dart: Make update script atomic (e31eb9a5) · Commits · nix / nixpkgs

pkgs/development/compilers/dart/sources.nix

+0 −3

Original line number	Diff line number	Diff line
		# This file was generated by ./update.sh.
		# If you do not find a line of three #-s at the end, it is broken and should not be used.
		let version = "2.19.3"; in
		{ fetchurl }: {
		versionUsed = version;
		@@ -24,4 +22,3 @@ let version = "2.19.3"; in
		sha256 = "0xksis14ff6bzjvycgxgldg96n88rh42adjyrrhcay2s183vh480";
		};
		}
		###

+8 −11

Original line number	Diff line number	Diff line
		@@ -3,7 +3,7 @@

		set -euo pipefail

		# so if the script fails, debug logs are on stdenv
		# so if the script fails, debug logs are on stderr
		log() {
		>&2 echo "DART_UPDATER: $@"
		}
		@@ -13,12 +13,11 @@ NEW_VER_DETAILS=$(curl -sL https://storage.googleapis.com/dart-archive/channels/
		NEW_VER=$(jq -r '.version' <<< "$NEW_VER_DETAILS")

		MY_PATH=$(dirname $(realpath "$0"))
		SRC_FILE="$MY_PATH/sources.nix"
		SRC_FILE=$(mktemp)

		log "file to write is $SRC_FILE"

		PRELUDE="# This file was generated by ./update.sh.
		# If you do not find a line of three #-s at the end, it is broken and should not be used.
		let version = \"$NEW_VER\"; in
		PRELUDE="let version = \"$NEW_VER\"; in
		{ fetchurl }: {
		versionUsed = version;"
		echo "$PRELUDE" > "$SRC_FILE"
		@@ -54,8 +53,7 @@ write_for_platform() {

		echo "$FETCHER" >> $SRC_FILE
		done
		log "finished for $1
		---"
		log "finished for $1"

		}

		@@ -73,8 +71,7 @@ declare -A LIN_PLATFORMS=( ["x86_64-linux"]="$X8664"
		write_for_platform "DARWIN_PLATFORMS" "macos"
		write_for_platform "LIN_PLATFORMS" "linux"

		echo '}
		###' >> $SRC_FILE
		echo '}' >> $SRC_FILE

		log "Replacing version in dart/default.nix"
		sed -i "s/$UPDATE_NIX_OLD_VERSION/$NEW_VER/g" "$MY_PATH/default.nix"
		log "moving tempfile to target directory"
		mv "$SRC_FILE" "$MY_PATH/sources.nix"