working on the overlay

justfile

@@ -86,3 +86,15 @@ gh MESSAGE:
   git add -A
   git commit -m "{{MESSAGE}}"
   git push
+
+#Fetch resources and compute sha256 hash
+hash URL:
+  #!/usr/bin/env bash
+  set -euo pipefail
+  if echo "{{URL}}" | grep -E '\.(tar\.gz|tgz|zip)$'; then
+    CONTENTS=$(nix-prefetch-url --unpack "{{URL}}")
+  else
+    CONTENTS=$(nix-prefetch-url "{{URL}}")
+  fi
+  HASH=$(echo -n "$CONTENTS" | nix hash to-sri --type sha256)
+  echo "$HASH"

src/system/modules/bitcoin/default.nix

@@ -3,7 +3,6 @@
 with lib;
 let
   cfg = config.modules.system.bitcoin;
-  version = "27.0";
 
   home = "/var/lib/bitcoind";
   conf = pkgs.writeText "bitcoin.conf" (import ./config);
@@ -14,13 +13,22 @@ in
   config = mkIf cfg.enable {
     nixpkgs.overlays = [
       (final: prev: {
-        bitcoind = prev.bitcoind.overrideAttrs (old: {
+        bitcoind = prev.stdenv.mkDerivation rec {
+          pname = "bitcoind";
+          version = "27.0";
+
           src = fetchTarball {
             url = "https://bitcoincore.org/bin/bitcoin-core-${version}/bitcoin-${version}-x86_64-linux-gnu.tar.gz";
             sha256 = "sha256-T45mgVrGXEZIz9mPbVd4feca6qKzOuJqXDaLzFv+JBY=";
           };
-          nativeBuildInputs = [ autoreconfHook ];
-        });
+
+          phase = [ "unpackPhase" "installPhase" ];
+
+          installPhase = ''
+            mkdir -p $out/bin
+            cp bin/* $out/bin
+          '';
+        };
       })
     ];