Use nix flakes

4 files changed, 99 insertions, 30 deletions

diff --git a/README.md b/README.md
index 2a62359..d346bd3 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@
 
 # Getting started
 
-1. Use `nix-shell` to download dependencies.
+1. Use `nix develop` to download dependencies.
 
 2. Initialize the database with `bin/db init`.
 
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..d557ed5
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,66 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1634851050,
+        "narHash": "sha256-N83GlSGPJJdcqhUxSCS/WwW5pksYf3VP1M13cDRTSVA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c91f3de5adaf1de973b797ef7485e441a65b8935",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1636730720,
+        "narHash": "sha256-JuZ9Zjy3Z/dChL6szbAVCstQoNzI1TKJaWIPlMmTkqA=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "860795fd7e65502728c96e54f251e2a733a771e7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1636683315,
+        "narHash": "sha256-udsMHw5gzZPvvFIhopoGicLK/LaYyDN3iAa1PEpP7uM=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "e87b7ea329fc78c5e5775c983193f630458c317f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..15ec82b
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,32 @@
+{
+  inputs = {
+    nixpkgs.url      = "github:nixos/nixpkgs";
+    flake-utils.url  = "github:numtide/flake-utils";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
+    rust-overlay.inputs.flake-utils.follows = "flake-utils";
+  };
+
+  outputs = { self, nixpkgs, rust-overlay, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs {
+          inherit system overlays;
+        };
+      in
+      with pkgs;
+      {
+        devShell = mkShell {
+          buildInputs = [
+            ((rustChannelOf { channel = "1.56.1"; }).rust)
+            cargo-watch
+            lld
+            openssl
+            pkgconfig
+            sqlite
+          ];
+        };
+      }
+    );
+}
diff --git a/shell.nix b/shell.nix
deleted file mode 100644
index 043940c..0000000
--- a/shell.nix
+++ /dev/null
@@ -1,29 +0,0 @@
-with import (builtins.fetchGit {
-  name = "nixos-21.05-2021-10-09";
-  url = "https://github.com/nixos/nixpkgs/";
-  ref = "refs/heads/nixos-21.05";
-  rev = "ce7a1190a0fa4ba3465b5f5471b08567060ca14c";
-}) {};
-
-let nixpkgs-mozilla = fetchFromGitHub {
-  owner = "mozilla";
-  repo = "nixpkgs-mozilla";
-  # commit from 2021-07-17
-  rev = "0510159186dd2ef46e5464484fbdf119393afa58";
-  sha256 = "1zybp62zz0h077zm2zmqs2wcg3whg6jqaah9hcl1gv4x8af4zhs6";
-}; in
-
-with import "${nixpkgs-mozilla.out}/rust-overlay.nix" pkgs pkgs;
-
-pkgs.mkShell {
-
-  buildInputs = [
-    ((rustChannelOf { channel = "1.55.0"; }).rust)
-    cargo-watch
-    lld
-    openssl
-    pkgconfig
-    sqlite
-  ];
-
-}