fix(pkgs): improve versioning

packages/piper/default.nix

@@ -1,15 +1,22 @@
 {
-  mkVersion,
-  piper,
+  lib,
   piper-src,
+  piper,
   ...
-}:
-piper.overrideAttrs {
-  pname = "piper";
-  version = mkVersion piper-src;
-  src = piper-src;
+}: let
+  inherit (lib) elemAt match readFile splitString;
 
-  mesonFlags = [
-    "-Druntime-dependency-checks=false"
-  ];
-}
+  releaseVer = elemAt (match "^([^']*).*" (elemAt (splitString "version: '" (readFile "${piper-src}/meson.build")) 1)) 0;
+in
+  piper.overrideAttrs rec {
+    pname = "piper";
+    version = "${releaseVer}+${piper-src.shortRev}";
+
+    name = "${pname}-${version}";
+
+    src = piper-src;
+
+    mesonFlags = [
+      "-Druntime-dependency-checks=false"
+    ];
+  }