Switch to using rustup to pin the rust toolchain

flake.lock

@@ -1,20 +1,5 @@
 {
   "nodes": {
-    "flake-utils": {
-      "locked": {
-        "lastModified": 1659877975,
-        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1680122840,
@@ -30,41 +15,9 @@
         "type": "indirect"
       }
     },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1665296151,
-        "narHash": "sha256-uOB0oxqxN9K7XGF1hcnY+PQnlQJ+3bP2vCn/+Ru/bbc=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "14ccaaedd95a488dd7ae142757884d8e125b3363",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "oxalica": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs_2"
-      },
-      "locked": {
-        "narHash": "sha256-o28gi3WKSsVeXg3wDSR2kGpawrDO5lzGG4eUsLTPglw=",
-        "type": "tarball",
-        "url": "https://github.com/oxalica/rust-overlay/archive/master.tar.gz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://github.com/oxalica/rust-overlay/archive/master.tar.gz"
-      }
-    },
     "root": {
       "inputs": {
         "nixpkgs": "nixpkgs",
-        "oxalica": "oxalica",
         "unstable": "unstable"
       }
     },

flake.nix

@@ -4,10 +4,9 @@
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-22.11";
     unstable.url = "nixpkgs/nixos-unstable";
-    oxalica.url = "https://github.com/oxalica/rust-overlay/archive/master.tar.gz";
   };
 
-  outputs = { self, nixpkgs, unstable, oxalica }:
+  outputs = { self, nixpkgs, unstable }:
     let 
       version = builtins.string 0 8 self.lastModifiedDate;
       supportedSystems = [ "x86_64-linux" ];
@@ -15,12 +14,8 @@
     {
       devShell."x86_64-linux" =
         let
-          rust_overlay = import oxalica;
-          pkgs = import nixpkgs { system = "x86_64-linux"; overlays = [ rust_overlay ]; };
-          pkgs-unstable = import unstable { system = "x86_64-linux"; overlays = [ rust_overlay ]; };
-          rust = pkgs.rust-bin.stable."1.65.0".default.override {
-            extensions = [ "rust-src" ];
-          };
+          pkgs = import nixpkgs { system = "x86_64-linux"; };
+          pkgs-unstable = import unstable { system = "x86_64-linux"; };
         in
         pkgs.mkShell {
           name = "ld-tools-devshell";
@@ -40,7 +35,7 @@
             pkgs.pipewire
             pkgs.pkg-config
             pkgs.sqlite
-            rust
+            pkgs.rustup
           ];
           LIBCLANG_PATH="${pkgs.llvmPackages.libclang.lib}/lib";
         };

rust-toolchain

@@ -0,0 +1,2 @@
+[toolchain]
+channel = "1.68.2"