Try less outdated nix

.github/workflows/ci-nix.yml

@@ -8,8 +8,6 @@ on:
   # Triggers the workflow on push or pull request events but only for the "main" branch
   push:
     branches: [ "main", "master", "devel" ]
-  pull_request:
-    branches: [ "main", "master", "devel" ]
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
@@ -23,7 +21,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@V28
         with:
-          nix_path: nixpkgs=channel:nixos-23.05
+          nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@v15
         with:
           name: cargo-crev
@@ -49,7 +47,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@V28
         with:
-          nix_path: nixpkgs=channel:nixos-23.05
+          nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@v15
         with:
           name: cargo-crev

flake.nix

@@ -24,13 +24,12 @@
         };
         lib = pkgs.lib;
 
-        fenix-channel = fenix.packages.${system}.stable;
+        fenix-channel = fenix.packages.${system}.latest;
 
         fenix-toolchain = (fenix-channel.withComponents [
           "rustc"
           "cargo"
           "clippy"
-          "rust-analysis"
           "rust-src"
           "llvm-tools-preview"
         ]);
@@ -225,7 +224,6 @@
             nativeBuildInputs = commonArgs.nativeBuildInputs ++ (with pkgs;
               [
                 fenix-toolchain
-                fenix.packages.${system}.rust-analyzer
 
                 pkgs.nixpkgs-fmt
                 pkgs.shellcheck