feat(c): init c template

templates/c/flake.nix

@@ -0,0 +1,28 @@
+{
+  description = "REPLACE_DESC";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    inherit (nixpkgs) lib;
+    forAllSystems = f:
+      lib.genAttrs ["x86_64-linux" "aarch64-linux"] (system:
+        f {
+          pkgs = import nixpkgs {
+            inherit system;
+          };
+        });
+  in {
+    packages = forAllSystems ({pkgs}: {
+      default = pkgs.callPackage ./flake/default.nix {};
+      REPLACE_ME = self.packages.${pkgs.system}.default;
+    });
+
+    formatter = forAllSystems ({pkgs}: pkgs.callPackage ./flake/formatter.nix {});
+  };
+}