Pass Scarb no proc macros flags to subprocesses. (#2230)

Signed-off-by: maciektr <[email protected]>
Co-authored-by: Maksim Zdobnikau <[email protected]>

Author: maciektr

scarb/src/subcommands.rs

@@ -32,6 +32,16 @@ pub fn get_env_vars(
             "SCARB_UI_VERBOSITY".into(),
             config.ui().verbosity().to_string().into(),
         ),
+        (
+            "SCARB_NO_PROC_MACROS".into(),
+            (!config.proc_macro_repository().load_proc_macros())
+                .to_string()
+                .into(),
+        ),
+        (
+            "SCARB_NO_PREBUILT_PROC_MACROS".into(),
+            (!config.load_prebuilt_proc_macros()).to_string().into(),
+        ),
         (SCARB_ENV.into(), config.app_exe()?.into()),
     ];
     if let Some(target_dir) = target_dir {

scarb/tests/subcommand.rs

@@ -70,6 +70,8 @@ fn env_variables_are_passed() {
                 SCARB_PROFILE
                 SCARB_MANIFEST_PATH
                 SCARB_UI_VERBOSITY
+                SCARB_NO_PROC_MACROS
+                SCARB_NO_PREBUILT_PROC_MACROS
             )
             for v in "${required[@]}"; do
                 if test -z "${!v}"

website/docs/writing-extensions/subcommands.md

@@ -16,17 +16,19 @@ Any additional arguments on the command line after `${command}` will be forwarde
 
 Additionally, Scarb passes more contextual information via environment variables:
 
-| Environment variable  | Description                                                                                |
-| --------------------- | ------------------------------------------------------------------------------------------ |
-| `SCARB`               | Path to Scarb executable.                                                                  |
-| `PATH`                | System `$PATH` but augmented with `bin` directory in Scarb's [local data directory][dirs]. |
-| `SCARB_CACHE`         | Path to Scarb's [cache][dirs] directory.                                                   |
-| `SCARB_CONFIG`        | Path to Scarb's [config][dirs] directory.                                                  |
-| `SCARB_TARGET_DIR`    | Path to the current target directory.                                                      |
-| `SCARB_PROFILE`       | Name of the current profile.                                                               |
-| `SCARB_MANIFEST_PATH` | Absolute path to current `Scarb.toml`.                                                     |
-| `SCARB_UI_VERBOSITY`  | Scarb's messages verbosity, possible values: `quiet`, `no-warnings`, `normal`, `verbose`.  |
-| `SCARB_LOG`           | Scarb's logger directives, follows [`tracing`'s `EnvFilter` syntax][tracing-env-filter].   |
+| Environment variable            | Description                                                                                             |
+| ------------------------------- | ------------------------------------------------------------------------------------------------------- |
+| `SCARB`                         | Path to Scarb executable.                                                                               |
+| `PATH`                          | System `$PATH` but augmented with `bin` directory in Scarb's [local data directory][dirs].              |
+| `SCARB_CACHE`                   | Path to Scarb's [cache][dirs] directory.                                                                |
+| `SCARB_CONFIG`                  | Path to Scarb's [config][dirs] directory.                                                               |
+| `SCARB_TARGET_DIR`              | Path to the current target directory.                                                                   |
+| `SCARB_PROFILE`                 | Name of the current profile.                                                                            |
+| `SCARB_MANIFEST_PATH`           | Absolute path to current `Scarb.toml`.                                                                  |
+| `SCARB_UI_VERBOSITY`            | Scarb's messages verbosity, possible values: `quiet`, `no-warnings`, `normal`, `verbose`.               |
+| `SCARB_LOG`                     | Scarb's logger directives, follows [`tracing`'s `EnvFilter` syntax][tracing-env-filter].                |
+| `SCARB_NO_PROC_MACROS`          | If enabled, Scarb will not allow running any procedural macros.                                         |
+| `SCARB_NO_PREBUILT_PROC_MACROS` | If enabled, Scarb will not load any prebuilt procedural macros and will build them from source instead. |
 
 ## Implementation recommendations