From 96b2edfb41eb6eed674c32e4576c432720b26959 Mon Sep 17 00:00:00 2001
From: Nathan McCarty <nathan@mccarty.io>
Date: Sat, 13 May 2023 14:37:05 -0400
Subject: [PATCH] Build packages from sources.json

---
 .gitignore |   5 ++
 flake.lock | 137 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix  |  44 +++++++++++++----
 3 files changed, 178 insertions(+), 8 deletions(-)
 create mode 100644 .gitignore
 create mode 100644 flake.lock

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1f4d430
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+.DS_Store
+.idea
+*.log
+tmp/
+result
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..a5052ac
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,137 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "naersk": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1679567394,
+        "narHash": "sha256-ZvLuzPeARDLiQUt6zSZFGOs+HZmE+3g4QURc8mkBsfM=",
+        "owner": "nix-community",
+        "repo": "naersk",
+        "rev": "88cd22380154a2c36799fe8098888f0f59861a15",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "naersk",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1683777345,
+        "narHash": "sha256-V2p/A4RpEGqEZussOnHYMU6XglxBJGCODdzoyvcwig8=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "635a306fc8ede2e34cb3dd0d6d0a5d49362150ed",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "naersk": "naersk",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay",
+        "utils": "utils"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1683944292,
+        "narHash": "sha256-ks2N8FtrUvePO5X2fN9WoelgMVwDa1jUA7XEyC9S+7g=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "7ec9793168e4c328f08d10ab7ef4a1ada2dbf93e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
index a96aa14..7d3fb15 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,11 +1,39 @@
 {
-  description = "A very basic flake";
-
-  outputs = { self, nixpkgs }: {
-
-    packages.x86_64-linux.hello = nixpkgs.legacyPackages.x86_64-linux.hello;
-
-    packages.x86_64-linux.default = self.packages.x86_64-linux.hello;
-
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    utils.url = "github:numtide/flake-utils";
+    naersk = {
+      url = "github:nix-community/naersk";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    # Used for rust compiler
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
+
+  description = "Rust Toolchain and Utility Flake";
+
+  outputs = { self, nixpkgs, utils, ... }@inputs:
+    (utils.lib.eachDefaultSystem (system: {
+      packages = let
+        sources = builtins.fromJSON (builtins.readFile ./sources/sources.json);
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [ (import inputs.rust-overlay) ];
+        };
+        rust = pkgs.rust-bin.stable.latest.default.override {
+          extensions = [ "llvm-tools-preview" ];
+        };
+        naersk-lib = inputs.naersk.lib."${system}".override {
+          rustc = rust;
+          cargo = rust;
+        };
+      in builtins.mapAttrs (name: source:
+        naersk-lib.buildPackage {
+          pname = source.pname;
+          src = pkgs.fetchCrate source;
+        }) sources;
+    }));
 }