templates: add flake template for new clans

flake.nix

@@ -22,6 +22,7 @@
       imports = [
         ./flake-parts/packages.nix
         ./flake-parts/formatting.nix
+        ./templates/flake-module.nix
         ./templates/python-project/flake-module.nix
         ./pkgs/clan-cli/flake-module.nix
       ];

templates/flake-module.nix

@@ -0,0 +1,12 @@
+{ ... }: {
+  flake.templates = {
+    new-clan = {
+      description = "Initialize a new clan flake";
+      path = ./new-clan;
+    };
+    python-project = {
+      description = "Initialize a new internal python project";
+      path = ./python-project;
+    };
+  };
+}

templates/new-clan/default.nix

@@ -0,0 +1,16 @@
+# This file provides backward compatibility to nix < 2.4 clients
+let
+  flake =
+    import
+      (
+        let
+          lock = builtins.fromJSON (builtins.readFile ./flake.lock);
+        in
+        fetchTarball {
+          url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+          sha256 = lock.nodes.flake-compat.locked.narHash;
+        }
+      )
+      { src = ./.; };
+in
+flake.defaultNix

templates/new-clan/flake.nix

@@ -0,0 +1,25 @@
+{
+  description = "";
+
+  inputs = {
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    flake-compat = {
+      url = "github:edolstra/flake-compat";
+      flake = false;
+    };
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+  };
+
+  outputs = inputs @ { flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+
+      systems = builtins.fromJSON (builtins.readFile ./systems.json);
+
+      imports =
+        let
+          relPaths = builtins.fromJSON (builtins.readFile ./imports.json);
+          paths = map (path: ./. + path) relPaths;
+        in
+        paths;
+    };
+}

templates/new-clan/imports.json

@@ -0,0 +1 @@
+[]

templates/new-clan/shell.nix

@@ -0,0 +1,2 @@
+(import ./default.nix).devShells.${builtins.currentSystem}.default
+  or (throw "dev-shell not defined. Cannot find flake attribute devShell.${builtins.currentSystem}.default")

templates/new-clan/systems.json

@@ -0,0 +1,3 @@
+[
+  "x86_64-linux"
+]