Backport 0.4 nixpgks to 24.11 (#111)

* Upgrade to nixpkgs 24.11

* Remove unusable Holo template

* Don't build Holo template in CI

.github/workflows/build.yaml

@@ -125,7 +125,6 @@ jobs:
         templates:
           - default
           - custom
-          - holo
           - rust-stable
 
       fail-fast: false

flake.nix

@@ -4,7 +4,7 @@
 
   # specify all input dependencies needed to create the outputs of the flake
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs?ref=24.05";
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-24.11";
 
     # utility to iterate over multiple target platforms
     flake-parts.url = "github:hercules-ci/flake-parts";
@@ -87,6 +87,10 @@
 
                 # Crane doesn't know which version to select from a workspace, so we tell it where to look
                 crateInfo = craneLib.crateNameFromCargoToml { cargoToml = inputs.holochain + "/crates/holochain/Cargo.toml"; };
+
+                # On intel macs, the default SDK is still 10.12 and Holochain won't build against that because we're
+                # using a newer Go version. So override with the newest SDK available for x86_64-darwin.
+                apple_sdk = if system == "x86_64-darwin" then [ pkgs.apple-sdk_10_15 ] else [ ];
               in
               craneLib.buildPackage {
                 pname = "holochain";
@@ -101,7 +105,7 @@
                 buildInputs = [
                   pkgs.go
                   pkgs.perl
-                ];
+                ] ++ (pkgs.lib.optionals pkgs.stdenv.isDarwin apple_sdk);
                 # Build Holochain, CLI and local services (bootstrap + signal server) binaries.
                 # Pass extra arguments like feature flags to build command.
                 cargoExtraArgs = "--bin holochain --bin hc --bin hc-sandbox --bin hcterm --bin hc-run-local-services " + cargoExtraArgs;
@@ -287,12 +291,6 @@
                 echo "Lair keystore   : not installed"
               fi
 
-              if command -v "holo-dev-server" > /dev/null; then
-                echo "Holo dev server : $(holo-dev-server --version)"
-              else
-                echo "Holo dev server : not installed"
-              fi
-
               if command -v "holochain" > /dev/null; then
                 echo "Holochain       : $(holochain --version) (${builtins.substring 0 7 inputs.holochain.rev})"
 
@@ -351,10 +349,6 @@
           path = ./templates/default;
           description = "Holonix default template";
         };
-        holo = {
-          path = ./templates/holo;
-          description = "Holonix template for Holo-enabled app development";
-        };
         custom-holochain = {
           path = ./templates/custom-holochain;
           description = "Holonix template for custom Holochain build";