vanadium: move dev configuration into devshells

nix/devShells/of-languages.nix

@@ -0,0 +1,78 @@
+{ pkgs, ... }:
+
+let
+  jdk = pkgs.jdk17.override { enableJavaFX = true; };
+in
+
+{
+
+  mkShell = pkgs.mkShell {
+    name = "mkShell";
+    packages = [ ];
+  };
+
+  rust = pkgs.mkShell {
+    name = "Rust";
+    packages = [
+      pkgs.cargo
+      pkgs.rustc
+      pkgs.rustfmt
+    ];
+  };
+
+  java = pkgs.mkShell {
+    name = "Java";
+    packages = [
+      jdk
+      pkgs.maven
+    ];
+    JAVA_HOME = "${pkgs.jdk17.home}";
+  };
+
+  scala = pkgs.mkShell {
+    name = "Scala";
+    packages = [
+      jdk
+      (pkgs.sbt.override { jre = jdk; })
+      (pkgs.scala.override { jre = jdk; })
+      (pkgs.metals.override { jre = jdk; })
+      (pkgs.ammonite.override { jre = jdk; })
+    ];
+    JAVA_HOME = "${pkgs.jdk17.home}";
+  };
+
+  typescript = pkgs.mkShell {
+    name = "Typescript";
+    packages = [
+      # typescript
+      pkgs.typescript
+      pkgs.nodejs_20
+      pkgs.vscode-langservers-extracted # HTML/CSS/JSON/ESLint
+      pkgs.nodePackages."@angular/cli" # module WE
+    ];
+  };
+
+  golang = pkgs.mkShell {
+    name = "Golang";
+    packages = [
+      pkgs.go
+      pkgs.golangci-lint
+      pkgs.gofumpt
+    ];
+  };
+
+  haskell = pkgs.mkShell {
+    name = "Haskell";
+    packages = [
+      # xmonad in configuration doesn't export the instance of ghc to PATH
+      (pkgs.haskellPackages.ghcWithPackages (self: [
+        self.xmonad-contrib
+        self.xmonad-extras
+      ]))
+
+      pkgs.cabal-install
+      pkgs.haskell-language-server
+    ];
+  };
+
+}