add rust devshell

README.md

@@ -60,3 +60,19 @@ $ nix develop github:adtya/devshell#haskell
 ```sh
 use flake github:adtya/devshell#haskell
 ```
+
+### Rust
+
+#### What's included?
+ - rustc
+ - rustfmt
+ - rust-analyzer
+
+#### Activate with Nix
+```sh
+$ nix develop github:adtya/devshell#rust
+```
+#### Activate with Direnv
+```sh
+use flake github:adtya/devshell#rust
+```

flake.nix

@@ -17,6 +17,7 @@
         go = import ./shells/go.nix { inherit pkgs; };
         haskell = import ./shells/haskell.nix { inherit pkgs; };
         python = import ./shells/python.nix { inherit pkgs; };
+        rust = import ./shells/rust.nix { inherit pkgs; };
       };
     }
   );

shells/rust.nix

@@ -0,0 +1,7 @@
+{ pkgs }: pkgs.mkShell {
+  packages = with pkgs; [ cargo rustc rustfmt rust-analyzer ];
+  shellHook = ''
+    export CARGO_HOME=$PWD/.nix/cargo
+    export PATH=$CARGO_HOME/bin:$PATH
+  '';
+}