nix: streamline packaging

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I4643ed2c8e6f8ceb5e722612cc67a74e6a6a6964

nix/package.nix

@@ -15,7 +15,7 @@
 in
   stdenv.mkDerivation {
     pname = "chroma";
-    version = "1.0.0";
+    version = "1.0.1";
 
     src = fs.toSource {
       root = s;
@@ -23,8 +23,11 @@ in
         (s + /include)
         (s + /protocols)
         (s + /src)
-
         (s + /Makefile)
+
+        # For testing
+        (s + /lib)
+        (s + /tests)
       ];
     };
 
@@ -49,9 +52,17 @@ in
 
     makeFlags = [
       "PREFIX=$(out)"
-      "SYSTEMD_DIR=$(out)/lib/systemd/system"
+      "SYSTEMD_DIR=$(out)/lib/systemd/system" # FIXME: this is an user service, actually
     ];
 
+    checkPhase = ''
+      runHook preCheck
+
+      make test
+
+      runHook postCheck
+    '';
+
     postInstall = ''
       install -Dm755 ${../chroma.conf.sample} $out/share/chroma.conf.sample
     '';