feat(package): nix-derivation-hash

package/nix-derivation-hash/default.nix

@@ -0,0 +1,9 @@
+{
+  writeShellScriptBin,
+  bash,
+}: let
+  # Use folder name as name of this system
+  name = builtins.baseNameOf ./.;
+in writeShellScriptBin name /* sh */ ''
+  ${bash}/bin/sh ${./${name}.sh} "$@"
+''

package/nix-derivation-hash/nix-derivation-hash.sh

@@ -0,0 +1,9 @@
+path="$1"
+base_path_name="$(basename "$path")"
+sha256="$(nix-hash --type sha256 "$path")"
+temp_dir="$(mktemp -d)"
+temp_file="${temp_dir}/${base_path_name}.str"
+printf "source:sha256:%s:/nix/store:%s" "$sha256" "$base_path_name" > "$temp_file"
+nix-hash --type sha256 --truncate --base32 --flat "$temp_file"
+
+rm -rf "${temp_dir:?}"