Merge pull request #721 from Atry/patch-4

feat(rust): set `$CARGO_INSTALL_ROOT` and `$PATH` used in `cargo install`

examples/rust/.test.sh

@@ -9,5 +9,8 @@ if [[ "$(uname)" == "Darwin" ]]; then
   echo "$CFLAGS" | grep -- "-iframework $DEVENV_PROFILE/Library/Frameworks"
 fi
 
+[[ "$CARGO_INSTALL_ROOT" == "$DEVENV_STATE/cargo-install" ]]
+echo "$PATH" | grep -- "$CARGO_INSTALL_ROOT/bin"
+
 cd app
 cargo run

src/modules/languages/rust.nix

@@ -67,6 +67,18 @@ in
         mkOverrideTools = lib.mkOverride (lib.modules.defaultOverridePriority - 1);
       in
       {
+        # Set $CARGO_INSTALL_ROOT so that executables installed by `cargo install` can be found from $PATH
+        enterShell = ''
+          export CARGO_INSTALL_ROOT=$(${
+            lib.strings.escapeShellArgs [
+              "${pkgs.coreutils}/bin/realpath"
+              "--no-symlinks"
+              "${config.devenv.state}/cargo-install"
+            ]
+          })
+          export PATH="$PATH:$CARGO_INSTALL_ROOT/bin"
+        '';
+
         packages = (builtins.map (c: cfg.toolchain.${c} or (throw (error "toolchain.${c}"))) cfg.components)
           ++ lib.optional pkgs.stdenv.isDarwin pkgs.libiconv;