1 files changed, 56 insertions, 0 deletions
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..70c1d19
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,56 @@
+{
+  description = "A small experiment in combining NixOS, musl, busybox, and other hipster trash";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+  outputs =
+    { self, nixpkgs }:
+    let
+      inherit (nixpkgs) lib;
+      inherit (lib.systems.parse) abis tripleFromSystem;
+
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+      ];
+
+      forAllSystems = lib.genAttrs systems;
+      nixpkgsFor = forAllSystems (system: nixpkgs.legacyPackages.${system});
+
+      # Get some extra information about all of our systems to use later
+      parsedFor = forAllSystems (system: (lib.systems.elaborate system).parsed);
+
+      # nixpkgs defaults to gnu/glibc when elaborating Linux doubles like
+      # `x86_64-linux`. Make it use musl instead
+      muslSystemFor = forAllSystems (system: parsedFor.${system} // { abi = abis.musl; });
+
+      muslConfigurationFor = forAllSystems (
+        system:
+        lib.nixosSystem {
+          modules = [
+            ./configuration
+            # Make sure our system configuration is built for musl
+            { nixpkgs.hostPlatform.config = tripleFromSystem muslSystemFor.${system}; }
+          ];
+        }
+      );
+    in
+    {
+      checks = forAllSystems (
+        system:
+        let
+          cpuArch = parsedFor.${system}.cpu.name;
+        in
+        {
+          configuration = self.nixosConfigurations."musl-${cpuArch}".config.system.build.vm;
+        }
+      );
+
+      formatter = forAllSystems (system: nixpkgsFor.${system}.nixfmt-rfc-style);
+
+      nixosConfigurations = {
+        musl-x86_64 = muslConfigurationFor.x86_64-linux;
+        musl-aarch64 = muslConfigurationFor.aarch64-linux;
+      };
+    };
+}