add scripts for treewide mainProgram

treewideMainProgram/verify_main_programs.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p bash ripgrep nix
+
+if [ "$1" == "head" ]; then
+	ADDED_MAINPROGRAMS=$(git diff-tree --no-commit-id --name-only -r HEAD)
+elif [ "$1" == "wip" ]; then
+  ADDED_MAINPROGRAMS=$(git diff --name-only --cached)
+else
+	echo "USAGE: $0 [ head | wip ]"
+	exit 1
+fi
+
+trap "exit 0" SIGINT
+
+TOTAL_COUNT=$(echo $ADDED_MAINPROGRAMS | wc -w)
+COUNTER=0
+for FILE in $ADDED_MAINPROGRAMS; do
+	PACKAGE_PATH=$(dirname "$FILE")
+	PACKAGE="${PACKAGE_PATH%/}"
+	PACKAGE="${PACKAGE##*/}"
+
+	COUNTER=$((COUNTER + 1))
+
+	echo "($COUNTER/$TOTAL_COUNT) Verifying mainProgram of: $PACKAGE"
+
+	NIXPKGS_ALLOW_UNFREE=1 nix build ".#$PACKAGE" --option builders '' --impure || {
+		echo "$PACKAGE" >> missing_main_program.txt && continue;
+	}
+
+	MAIN_PROGRAM=$(rg "mainProgram = \"(.+?)\";" --replace "\$1" --only-matching --no-line-number "$FILE" | xargs)
+
+	echo "mainProgram: $PACKAGE"
+	if ! {
+		{
+			[ -d "result/bin" ] && [ "$(ls result/bin | xargs)" == "$MAIN_PROGRAM" ];
+		} || {
+			[ -d "result-bin/bin" ] && [ "$(ls result-bin/bin | xargs)" == "$MAIN_PROGRAM" ];
+		};
+	}; then
+	  echo "mainProgram doesn't match contents:"
+ 		ls result/bin 2>/dev/null || true
+ 		ls result-bin/bin 2>/dev/null || true
+		echo "$PACKAGE" >> missing_main_program.txt
+	fi
+
+	rm result* || true
+done