From d5d4a1d96c926461f9ea8ae5fefd7665699eeaa1 Mon Sep 17 00:00:00 2001
From: Daniel Flanagan <daniel@lyte.dev>
Date: Wed, 18 Dec 2024 09:30:00 -0600
Subject: [PATCH] Break up flake

---
 templates/elixir/flake.lock          | 27 ++++++++++
 templates/elixir/flake.nix           | 78 ++--------------------------
 templates/elixir/nix/boilerplate.nix | 16 ++++++
 templates/elixir/nix/overlays.nix    | 16 ++++++
 templates/elixir/nix/packages.nix    | 24 +++++++++
 templates/elixir/nix/shells.nix      | 15 ++++++
 6 files changed, 103 insertions(+), 73 deletions(-)
 create mode 100644 templates/elixir/flake.lock
 create mode 100644 templates/elixir/nix/boilerplate.nix
 create mode 100644 templates/elixir/nix/overlays.nix
 create mode 100644 templates/elixir/nix/packages.nix
 create mode 100644 templates/elixir/nix/shells.nix

diff --git a/templates/elixir/flake.lock b/templates/elixir/flake.lock
new file mode 100644
index 0000000..9055d38
--- /dev/null
+++ b/templates/elixir/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1734435836,
+        "narHash": "sha256-kMBQ5PRiFLagltK0sH+08aiNt3zGERC2297iB6vrvlU=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "4989a246d7a390a859852baddb1013f825435cee",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/templates/elixir/flake.nix b/templates/elixir/flake.nix
index ec7904f..aaeea38 100644
--- a/templates/elixir/flake.nix
+++ b/templates/elixir/flake.nix
@@ -3,79 +3,11 @@
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
   };
 
-  outputs = {
-    self,
-    nixpkgs,
-    ...
-  }: let
-    inherit (self) outputs;
-
-    supportedSystems = [
-      "aarch64-linux"
-      "x86_64-linux"
-
-      "x86_64-darwin"
-      "aarch64-darwin"
-    ];
-
-    forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
-
-    overlay = final: prev: {
-      erlangPackages = prev.beam.packagesWith prev.erlang_26;
-      erlang = final.erlangPackages.erlang;
-      elixir = final.erlangPackages.elixir_1_16;
-
-      mixRelease = final.erlangPackages.mixRelease.override {
-        elixir = final.elixir;
-      };
-      fetchMixDeps = final.erlangPackages.fetchMixDeps.override {
-        elixir = final.elixir;
-      };
-
-      elixir-ls = prev.elixir-ls.override {elixir = final.elixir;};
-    };
-
-    nixpkgsFor = system: ((import nixpkgs {inherit system;}).extend overlay);
+  outputs = inputs: let
+    inherit (import nix/boilerplate.nix inputs) call;
   in {
-    packages = forAllSystems (system: let
-      pkgs = nixpkgsFor system;
-
-      inherit (pkgs) beamPackages;
-      inherit (beamPackages) mixRelease fetchMixDeps;
-
-      version = "0.1.0";
-      src = ./.;
-      pname = "api.lyte.dev";
-    in {
-      /*
-      this-package = mixRelease {
-        inherit pname version src;
-        mixFodDeps = fetchMixDeps {
-          inherit version src;
-          pname = "mix-deps-${pname}";
-          hash = pkgs.lib.fakeSha256;
-        };
-        buildInputs = with pkgs; [sqlite];
-        HOME = "$(pwd)";
-        MIX_XDG = "$HOME";
-      };
-
-      default = outputs.packages.${system}.this-package;
-      */
-    });
-
-    devShells = forAllSystems (system: let
-      pkgs = nixpkgsFor system;
-    in {
-      default = pkgs.mkShell {
-        shellHook = "export LOCALE_ARCHIVE=/usr/lib/locale/locale-archive";
-        buildInputs = with pkgs; [
-          elixir
-          elixir-ls
-
-          inotify-tools
-        ];
-      };
-    });
+    overlays = import nix/overlays.nix;
+    packages = call (import nix/packages.nix);
+    devShells = call (import nix/shells.nix);
   };
 }
diff --git a/templates/elixir/nix/boilerplate.nix b/templates/elixir/nix/boilerplate.nix
new file mode 100644
index 0000000..2778326
--- /dev/null
+++ b/templates/elixir/nix/boilerplate.nix
@@ -0,0 +1,16 @@
+inputs @ {
+  nixpkgs,
+  self,
+  ...
+}: let
+  forSelfOverlay =
+    if builtins.hasAttr "forSelf" self.overlays
+    then self.overlays.forSelf
+    else (_: p: p);
+in rec {
+  systems = ["aarch64-linux" "x86_64-linux" "x86_64-darwin" "aarch64-darwin"];
+  forSystems = nixpkgs.lib.genAttrs systems;
+  pkgsFor = system: ((import nixpkgs {inherit system;}).extend forSelfOverlay);
+  genPkgs = func: (forSystems (system: func (pkgsFor system)));
+  call = imported: genPkgs (pkgs: imported (inputs // {inherit pkgs;}));
+}
diff --git a/templates/elixir/nix/overlays.nix b/templates/elixir/nix/overlays.nix
new file mode 100644
index 0000000..912427f
--- /dev/null
+++ b/templates/elixir/nix/overlays.nix
@@ -0,0 +1,16 @@
+{
+  forrSelf = final: prev: {
+    erlangPackages = prev.beam.packagesWith prev.erlang_28;
+    erlang = final.erlangPackages.erlang;
+    elixir = final.erlangPackages.elixir_1_17;
+
+    mixRelease = final.erlangPackages.mixRelease.override {
+      elixir = final.elixir;
+    };
+    fetchMixDeps = final.erlangPackages.fetchMixDeps.override {
+      elixir = final.elixir;
+    };
+
+    elixir-ls = prev.elixir-ls.override {elixir = final.elixir;};
+  };
+}
diff --git a/templates/elixir/nix/packages.nix b/templates/elixir/nix/packages.nix
new file mode 100644
index 0000000..42e6288
--- /dev/null
+++ b/templates/elixir/nix/packages.nix
@@ -0,0 +1,24 @@
+{
+  pkgs,
+  self,
+  ...
+}: {
+  my-package = let
+    version = "1.0.0";
+    src = ./.;
+    pname = "my-package";
+  in
+    pkgs.beamPackages.mixRelease {
+      inherit pname version src;
+      mixFodDeps = pkgs.beamPackages.fetchMixDeps {
+        inherit version src;
+        pname = "mix-deps-${pname}";
+        hash = pkgs.lib.fakeSha256;
+      };
+      # buildInputs = with pkgs; [];
+      # HOME = "$(pwd)";
+      # MIX_XDG = "$HOME";
+    };
+
+  default = self.packages.${pkgs.system}.my-package;
+}
diff --git a/templates/elixir/nix/shells.nix b/templates/elixir/nix/shells.nix
new file mode 100644
index 0000000..7a7512a
--- /dev/null
+++ b/templates/elixir/nix/shells.nix
@@ -0,0 +1,15 @@
+{
+  pkgs,
+  # self,
+  ...
+}: {
+  elixir-dev = pkgs.mkShell {
+    shellHook = "export LOCALE_ARCHIVE=/usr/lib/locale/locale-archive";
+    # inputsFrom = [self.packages.${pkgs.system}.my-package];
+    buildInputs = with pkgs; [
+      elixir
+      elixir-ls
+      inotify-tools
+    ];
+  };
+}