new controls

devenv.nix

@@ -3,15 +3,19 @@
 {
   # https://devenv.sh/basics/
   env.GREET = "devenv";
-
+  env.LIBCLANG_PATH = "${config.env.DEVENV_PROFILE}/lib/libclang.so";
   # https://devenv.sh/packages/
-  packages = [ pkgs.git pkgs.v4l-utils pkgs.clangStdenv pkgs.mesa pkgs.rustup pkgs.rustfmt pkgs.cargo ];
+  packages = [ pkgs.git pkgs.v4l-utils pkgs.clangStdenv pkgs.mesa
+      pkgs.cmake pkgs.opencv4 pkgs.systemdLibs pkgs.libudev-zero
+      pkgs.libudev0-shim pkgs.vcpkg pkgs.pkg-config pkgs.libclang
+      pkgs.fontconfig pkgs.clang-tools pkgs.linuxHeaders
+  ];
 
   # https://devenv.sh/languages/
-  # languages.rust.enable = true;
-
+  languages.rust.enable = true;
+  languages.c.enable = true;
   # https://devenv.sh/processes/
-  # processes.cargo-watch.exec = "cargo-watch";
+  processes.cargo-watch.exec = "cargo-watch";
 
   # https://devenv.sh/services/
   # services.postgres.enable = true;
@@ -24,6 +28,7 @@
   enterShell = ''
     hello
     git --version
+    echo ''${LIBCLANG_PATH}
   '';
 
   # https://devenv.sh/tests/
@@ -32,6 +37,8 @@
     git --version | grep --color=auto "${pkgs.git.version}"
   '';
 
+
+
   # https://devenv.sh/pre-commit-hooks/
   # pre-commit.hooks.shellcheck.enable = true;