xtask: allow "unstable_features" flag

Author: phip1611

xtask/src/cargo.rs

@@ -51,6 +51,7 @@ pub enum Feature {
     Logger,
     PanicOnLoggerErrors,
     Unstable,
+    UnstableAlloc,
 
     // `uefi-services` features.
     PanicHandler,
@@ -69,6 +70,7 @@ impl Feature {
             Self::Logger => "logger",
             Self::PanicOnLoggerErrors => "panic-on-logger-errors",
             Self::Unstable => "unstable",
+            Self::UnstableAlloc => "unstable_alloc",
 
             Self::PanicHandler => "uefi-services/panic_handler",
             Self::Qemu => "uefi-services/qemu",
@@ -99,6 +101,11 @@ impl Feature {
         vec![Self::GlobalAllocator, Self::Alloc, Self::Logger]
     }
 
+    /// Set of features that enables more code in the root uefi crate.
+    pub fn more_code_unstable() -> Vec<Self> {
+        vec![Self::Unstable, Self::UnstableAlloc]
+    }
+
     fn comma_separated_string(features: &[Feature]) -> String {
         features
             .iter()

xtask/src/main.rs

@@ -45,9 +45,15 @@ fn build(opt: &BuildOpt) -> Result<()> {
         return build_feature_permutations(opt);
     }
 
+    let mut features = Feature::more_code();
+
+    if opt.unstable_features {
+        features.extend(Feature::more_code_unstable())
+    }
+
     let cargo = Cargo {
         action: CargoAction::Build,
-        features: Feature::more_code(),
+        features,
         packages: Package::all_except_xtask(),
         release: opt.build_mode.release,
         target: Some(*opt.target),

xtask/src/opt.rs

@@ -63,6 +63,10 @@ pub struct BuildOpt {
     #[clap(flatten)]
     pub build_mode: BuildModeOpt,
 
+    /// Tells whether unstable features should be activated.
+    #[clap(long, action)]
+    pub unstable_features: bool,
+
     /// Build multiple times to check that different feature
     /// combinations work.
     #[clap(long, action)]