add rust, rust-overlay

modules/jetbrains-ide.nix

@@ -14,6 +14,12 @@ in
   # - .env run configuration: https://github.com/NixOS/nix-idea/issues/1#issuecomment-590851686
   # - nix-shell IDE-wide: https://github.com/NixOS/nix-idea/issues/1#issuecomment-734997521
 
+  imports =
+    [
+      # Rust programming lang
+      ./rust.nix
+    ];
+
   allowUnfree = [
     version
   ];

modules/nur-and-unstable.nix

@@ -1,4 +1,7 @@
 { config, pkgs, lib, ... }:
+let
+  sources = import ../nix/sources.nix;
+in
 {
   # How NUR (or unstable) can be imported without `niv`.
   #nixpkgs.config.packageOverrides = pkgs: {
@@ -9,11 +12,11 @@
 
   nixpkgs.config.packageOverrides = pkgs: {
     # Import NUR with niv.
-    nur = import (import ../nix/sources.nix).NUR {
+    nur = import sources.NUR {
       inherit pkgs;
     };
     # Import unstable with niv.
-    unstable = import (import ../nix/sources.nix).unstable {
+    unstable = import sources.unstable {
       inherit pkgs;
 
       # "unstable" `nixpkgs.config` has to be configured here where we import it.
@@ -33,6 +36,11 @@
     };
   };
 
+  nixpkgs.overlays = [
+    # Import rust-overlay with niv.
+    (import sources.rust-overlay)
+  ];
+
   #environment.systemPackages = with pkgs; [
   #  # Example NUR usage:
   #  nur.repos.mic92.hello-nur

modules/rust.nix

@@ -0,0 +1,22 @@
+{ config, pkgs, ... }:
+let
+  #rustVersion = pkgs.rust-bin.stable."1.81.0".default.override {
+  rustVersion = pkgs.rust-bin.stable.latest.default.override {
+    extensions = [ "rust-src" ];
+    #targets = [
+    #  "x86_64-unknown-linux-musl"
+    #  #"arm-unknown-linux-gnueabihf"
+    #  #"wasm32-wasi"
+    #  #"wasm32-unknown-unknown"
+    #];
+  };
+  rustPlatform = pkgs.makeRustPlatform {
+    cargo = rustVersion;
+    rustc = rustVersion;
+  };
+in
+{
+  environment.systemPackages = with pkgs; [
+    rustPlatform.rust.cargo
+  ];
+}

nix/sources.json

@@ -35,6 +35,18 @@
         "url": "https://github.com/NixOS/nixpkgs/archive/83fb6c028368e465cd19bb127b86f971a5e41ebc.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
+    "rust-overlay": {
+        "branch": "master",
+        "description": "Pure and reproducible nix overlay of binary distributed rust toolchains",
+        "homepage": "",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "7c4cd99ed7604b79e8cb721099ac99c66f656b3a",
+        "sha256": "00h0j10d1zxg03gjzzfj22s14fs0apmd2cvxmk7dcsaj9d8ni1bx",
+        "type": "tarball",
+        "url": "https://github.com/oxalica/rust-overlay/archive/7c4cd99ed7604b79e8cb721099ac99c66f656b3a.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
     "unstable": {
         "branch": "nixpkgs-unstable",
         "description": "Nix Packages collection & NixOS",