Initial Elixir project

.envrc

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+use flake

.formatter.exs

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+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]

.gitignore

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+/.direnv/
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+frajtano-*.tar
+
+# Temporary files, for example, from tests.
+/tmp/
+
+/.nix-hex
+/.nix-mix

README.md

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+# Frajtano
+
+**TODO: Add description**
+
+## Installation
+
+If [available in Hex](https://hex.pm/docs/publish), the package can be installed
+by adding `frajtano` to your list of dependencies in `mix.exs`:
+
+```elixir
+def deps do
+  [
+    {:frajtano, "~> 0.1.0"}
+  ]
+end
+```
+
+Documentation can be generated with [ExDoc](https://github.com/elixir-lang/ex_doc)
+and published on [HexDocs](https://hexdocs.pm). Once published, the docs can
+be found at <https://hexdocs.pm/frajtano>.
+

default.nix

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+{
+  mixRelease,
+  fetchMixDeps,
+  elixir,
+}:
+mixRelease rec {
+  pname = "frajtano";
+  version = "0.0.1";
+
+  inherit elixir;
+  src = builtins.path {
+    path = ./.;
+    name = "${pname}-source";
+    filter = path: _type: baseNameOf path != "flake.nix" && baseNameOf path != "flake.lock";
+  };
+  mixFodDeps = fetchMixDeps {
+    pname = "mix-deps-${pname}";
+    inherit version src;
+    sha256 = "sha256-lknkq6b1yDOLgTpR/tPEk9UKqpqQT6H1N5g15M60nCA=";
+  };
+
+  ELIXIR_MAKE_CACHE_DIR = "/tmp/.elixir-make-cache";
+  meta.mainProgram = "${pname}";
+}

flake.lock

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+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1721924956,
+        "narHash": "sha256-Sb1jlyRO+N8jBXEX9Pg9Z1Qb8Bw9QyOgLDNMEpmjZ2M=",
+        "path": "/nix/store/xblysc3prg1zqsi59fr36nj6wdiqryzp-source",
+        "rev": "5ad6a14c6bf098e98800b091668718c336effc95",
+        "type": "path"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "systems": "systems"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "id": "systems",
+        "type": "indirect"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "frajtano: an ssh agent multiplexer";
+
+  outputs = {
+    self,
+    nixpkgs,
+    systems,
+  }: let
+    inherit (nixpkgs) lib;
+    eachSystem = f:
+      lib.genAttrs (import systems) (system:
+        f {
+          inherit system;
+          pkgs = nixpkgs.legacyPackages.${system};
+          ownPkgs = self.packages.${system};
+        });
+  in {
+    devShells = eachSystem ({pkgs, ownPkgs, ...}: {
+      default = pkgs.beam.packages.erlang_26.callPackage ./shell.nix {
+        inherit ownPkgs;
+      };
+    });
+    packages = eachSystem ({pkgs, ...}: {
+      default = pkgs.beam.packages.erlang_26.callPackage ./default.nix {};
+    });
+  };
+}

lib/frajtano.ex

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+defmodule Frajtano do
+end

mix.exs

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+defmodule Frajtano.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :frajtano,
+      version: "0.0.1",
+      elixir: "~> 1.16",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  defp deps do
+    []
+  end
+end

shell.nix

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+{
+  lib,
+  pkgs,
+  ownPkgs,
+  mkShell,
+  elixir-ls,
+  inotify-tools,
+}:
+mkShell {
+  inputsFrom = [ ownPkgs.default ];
+  packages =
+    [elixir-ls]
+    ++ lib.lists.optional (pkgs.system == "x86_64-linux") inotify-tools
+    ++ lib.lists.optionals (pkgs.system == "aarch64-darwin") (with pkgs.darwin.apple_sdk.frameworks; [
+      CoreFoundation
+      CoreServices
+    ]);
+  shellHook = ''
+    mkdir -p .nix-mix
+    mkdir -p .nix-hex
+    export MIX_HOME=$PWD/.nix-mix
+    export HEX_HOME=$PWD/.nix-hex
+  '';
+}

test/frajtano_test.exs

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+defmodule FrajtanoTest do
+  use ExUnit.Case
+  doctest Frajtano
+end

test/test_helper.exs

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+ExUnit.start()