Add Rust development shell

flake.lock

@@ -81,6 +81,21 @@
         "type": "github"
       }
     },
+    "flake-utils_3": {
+      "locked": {
+        "lastModified": 1637014545,
+        "narHash": "sha256-26IZAc5yzlD9FlDT54io1oqG/bBoyka+FJk5guaX4x4=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "bba5dcc8e0b20ab664967ad83d24d64cb64ec4f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -88,11 +103,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1639774225,
+        "lastModified": 1640296831,
-        "narHash": "sha256-pdXvYneQVzB14fD+Q283s17tXRyQMs2JMx4mZ4JeSYg=",
+        "narHash": "sha256-Mu32vTcfZru4VrvgnpvQKmwC4uY0oF3vnnC2o9SgnRU=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "8b44e81978a2bef60c83ecc0199ab2523310214a",
+        "rev": "f15b151ca1c4aea23515c241051d71f1b5cf97c8",
         "type": "github"
       },
       "original": {
@@ -104,18 +119,15 @@
     "neovim-flake": {
       "inputs": {
         "flake-utils": "flake-utils_2",
-        "nixpkgs": [
+        "nixpkgs": "nixpkgs"
-          "neovim-nightly-overlay",
-          "nixpkgs"
-        ]
       },
       "locked": {
         "dir": "contrib",
-        "lastModified": 1639795113,
+        "lastModified": 1640212476,
-        "narHash": "sha256-pVBNbtpamfSOM3eBZWn/Xx9V9FwRaYw7WZ+yOUyz2UA=",
+        "narHash": "sha256-479GRRtuk0JL0aQLvfAx+R1DvuNke1W3Fe8hTcuPUno=",
         "owner": "neovim",
         "repo": "neovim",
-        "rev": "818ae74eaf6f4538ca61ee4ba703543b0caaff10",
+        "rev": "7b8fbbdebe90a2dbf0d57464c93c7d5bfc3da449",
         "type": "github"
       },
       "original": {
@@ -129,14 +141,14 @@
       "inputs": {
         "flake-compat": "flake-compat",
         "neovim-flake": "neovim-flake",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1639815237,
+        "lastModified": 1640247287,
-        "narHash": "sha256-sSJdAQgF1F59BmlyRkXPlfZr2eic/AXcIAX+23p8V4M=",
+        "narHash": "sha256-LjWjopWwbwdLN6Fmct59aJK0LYsUwbIgcQ5sY+n4N0g=",
         "owner": "nix-community",
         "repo": "neovim-nightly-overlay",
-        "rev": "368cdc561097d7d6ff67ada5feff818bef86a4d4",
+        "rev": "f8886b6b3cedf8a38dd6daa6dfe64df9c710bd65",
         "type": "github"
       },
       "original": {
@@ -147,11 +159,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1639525045,
+        "lastModified": 1640233012,
-        "narHash": "sha256-z4GXFNzO+5V4CAUm2DDMAryLOWUKEbQif2ifvv1Ypg4=",
+        "narHash": "sha256-DNKMmWZ/RLoh5IVJLAa5HYOy4IW28mBBYDMgMxzzom8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "a2e281f5770247855b85d70c43454ba5bff34613",
+        "rev": "611f29bedadfb2aa4c9c26c4af65f05dd35f2f3f",
         "type": "github"
       },
       "original": {
@@ -163,11 +175,27 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1639713555,
+        "lastModified": 1640139330,
-        "narHash": "sha256-w1TacWjnqhC19n+rheyOif3JxwvWMbyxfgqYCY0FLdQ=",
+        "narHash": "sha256-Nkp3wUOGwtoQ7EH28RLVJ7EqB/e0TU7VcsM7GLy+SdY=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "81cef6b70fb5d5cdba5a0fef3f714c2dadaf0d6d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1640269308,
+        "narHash": "sha256-vBVwv3+kPrxbNyfo48cB5cc5/4tq5zlJGas/qw8XNBE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "45a3f9d7725c7e21b252c223676cc56fb2ed5d6d",
+        "rev": "0c408a087b4751c887e463e3848512c12017be25",
         "type": "github"
       },
       "original": {
@@ -184,7 +212,29 @@
         "flake-utils": "flake-utils",
         "home-manager": "home-manager",
         "neovim-nightly-overlay": "neovim-nightly-overlay",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs_3",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_3",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1640313506,
+        "narHash": "sha256-O7s/aV5xjhYV98Bw2/CR7zMwi+DLTEGiahpAJ9BAlgw=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "203dc4fc3fe2a5df1aa481a3fc8a1bb27074d677",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -19,6 +19,8 @@
 
     # Overlays.
     neovim-nightly-overlay.url = "github:nix-community/neovim-nightly-overlay";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
   };
 
   outputs = inputs@{ self, nixpkgs, home-manager, ... }:
@@ -29,6 +31,9 @@
 
         # Neovim nightly!
         inputs.neovim-nightly-overlay.overlay
+
+        # Rust overlay for them ease of setting up Rust toolchains.
+        inputs.rust-overlay.overlay
       ];
 
       forAllSystems = f:
@@ -133,6 +138,8 @@
       # more preferable than installing all of the packages at the system
       # configuration (or even home environment).
       devShells = forAllSystems (system:
-        import ./shells { pkgs = import nixpkgs { inherit system; }; });
+        import ./shells {
+          pkgs = import nixpkgs { inherit system overlays; };
+        });
     };
 }

shells/default.nix

@@ -3,4 +3,5 @@
 with pkgs; {
   flatpak = callPackage ./flatpak.nix { };
   hugo = callPackage ./hugo.nix { };
+  rust = callPackage ./rust.nix { };
 }

shells/rust.nix

@@ -0,0 +1,18 @@
+# This is just for a quick development setup. Otherwise, I recommend
+# to use the `rust` template from `nixpkgs` or whatever you prefer.
+{ mkShell, openssl, pkgconfig, cargo, rustc, rustfmt, rust-analyzer, rustPackages, rustPlatform }:
+
+mkShell {
+  buildInputs = [
+    openssl # In case some package needs it.
+    pkgconfig # In case some other package needs it.
+
+    # Rust platform.
+    cargo
+    rustc
+    rustfmt
+    rust-analyzer
+  ];
+
+  RUST_SRC_PATH = rustPlatform.rustLibSrc;
+}