system: install nix-diff

Retreiving the hook from nixpkgs-unstable causes the derivation to
change since the store path of nixpkgs-unstable changes

overlays/backports.nix

@@ -25,7 +25,7 @@ let
   stripJavaArchivesHook = final.makeSetupHook {
     name = "strip-java-archives-hook";
     propagatedBuildInputs = [ final.strip-nondeterminism ];
-  } "${nixfiles.inputs.nixpkgs-unstable}/pkgs/build-support/setup-hooks/strip-java-archives.sh";
+  } ./strip-java-archives.sh;
 
 in {
   vesktop = backport' "vesktop";

overlays/strip-java-archives.sh

@@ -0,0 +1,16 @@
+# This setup hook makes the fixup phase to repack all java archives in a
+# deterministic fashion. The most important change being done is the resetting
+# of the modification times of the archive entries
+
+fixupOutputHooks+=('stripJavaArchivesIn $prefix')
+
+stripJavaArchivesIn() {
+    local dir="$1"
+    echo "stripping java archives in $dir"
+    find $dir -type f -regextype posix-egrep -regex ".*\.(jar|war|hpi|apk)$" -print0 |
+    while IFS= read -rd '' f; do
+        echo "stripping java archive $f"
+        strip-nondeterminism --type jar "$f"
+    done
+}
+

system/common/wm.nix

@@ -10,6 +10,7 @@ in
     services = {
       power-profiles-daemon.enable = mkDefault true;
       blueman.enable = mkDefault config.hardware.bluetooth.enable;
+      udisks2.enable = mkDefault true;
     };
     programs = {
       nm-applet.enable = mkDefault config.networking.networkmanager.enable;

system/profile/base.nix

@@ -99,6 +99,7 @@ in
         nix-du
         graphviz # for nix-du
         nvd
+        nix-diff
 
         # secrets
         age