build: Ability to specify toolchain branch

xtask.toml

@@ -0,0 +1,2 @@
+[toolchain]
+branch = "alnyan/v0.1.0"

xtask/src/build/mod.rs

@@ -128,7 +128,7 @@ pub fn clean_all(env: &BuildEnv, clean_toolchain: bool) -> Result<(), Error> {
     Ok(())
 }
 
-pub fn build_toolchain(env: BuildEnv, branch: &str) -> Result<(), Error> {
-    toolchain::fetch(&env, branch)?;
-    toolchain::build(&env)
+pub fn build_toolchain(env: &BuildEnv, branch: &str) -> Result<(), Error> {
+    toolchain::fetch(env, branch)?;
+    toolchain::build(env)
 }

xtask/src/env.rs

@@ -2,6 +2,18 @@ use std::path::PathBuf;
 
 use clap::ValueEnum;
 
+#[derive(Debug, serde::Deserialize)]
+#[serde(default)]
+pub struct ToolchainConfig {
+    pub branch: String,
+}
+
+#[derive(Debug, Default, serde::Deserialize)]
+#[serde(default)]
+pub struct XTaskConfig {
+    pub toolchain: ToolchainConfig,
+}
+
 #[derive(Debug, Default, Clone, Copy, PartialEq, Eq, ValueEnum)]
 pub enum Profile {
     #[default]
@@ -20,6 +32,8 @@ pub enum Arch {
 
 #[derive(Debug)]
 pub struct BuildEnv {
+    pub config: XTaskConfig,
+
     pub profile: Profile,
     pub arch: Arch,
     pub host_triple: String,
@@ -30,8 +44,16 @@ pub struct BuildEnv {
     pub userspace_output_dir: PathBuf,
 }
 
+impl Default for ToolchainConfig {
+    fn default() -> Self {
+        Self {
+            branch: "alnyan/yggdrasil-master".into(),
+        }
+    }
+}
+
 impl BuildEnv {
-    pub fn new(profile: Profile, arch: Arch, workspace_root: PathBuf) -> Self {
+    pub fn new(config: XTaskConfig, profile: Profile, arch: Arch, workspace_root: PathBuf) -> Self {
         let kernel_output_dir =
             workspace_root.join(format!("target/{}/{}", arch.kernel_triple(), profile.dir()));
         let userspace_output_dir = workspace_root.join(format!(
@@ -42,6 +64,8 @@ impl BuildEnv {
         let host = env!("TARGET");
 
         Self {
+            config,
+
             profile,
             arch,
             host_triple: host.into(),

xtask/src/main.rs

@@ -1,10 +1,6 @@
-// #![deny(warnings)]
+#![deny(warnings)]
 
-use std::{
-    fs,
-    path::{Path, PathBuf},
-    process::ExitCode,
-};
+use std::{fs, path::PathBuf, process::ExitCode};
 
 use build::CheckAction;
 use clap::{Parser, Subcommand};
@@ -40,6 +36,14 @@ struct Args {
     )]
     clean_userspace: bool,
 
+    #[clap(
+        short = 'C',
+        long,
+        default_value = "xtask.toml",
+        help = "Configuration path"
+    )]
+    config_path: PathBuf,
+
     #[clap(subcommand)]
     action: Option<SubArgs>,
 }
@@ -77,13 +81,7 @@ enum SubArgs {
     },
 
     #[clap(about = "Build the Yggdrasil OS Rust toolchain")]
-    Toolchain {
-        #[clap(
-            default_value = "alnyan/yggdrasil-master",
-            help = "Use a specific toolchain repo branch"
-        )]
-        branch: String,
-    },
+    Toolchain { branch: Option<String> },
     #[clap(about = "Print the host triple")]
     HostTriple,
 }
@@ -97,7 +95,8 @@ fn run(args: Args) -> Result<(), Error> {
     } else {
         Profile::Debug
     };
-    let env = env::BuildEnv::new(profile, args.arch, workspace_root);
+    let config = toml::from_str(&fs::read_to_string(args.config_path)?)?;
+    let env = env::BuildEnv::new(config, profile, args.arch, workspace_root);
 
     if args.clean_userspace && !matches!(&action, SubArgs::Clean { .. }) {
         build::clean_userspace(&env)?;
@@ -111,7 +110,10 @@ fn run(args: Args) -> Result<(), Error> {
         SubArgs::Clean { toolchain } => build::clean_all(&env, toolchain),
         // SubArgs::GitStatus => util::git_status_all(&env),
         SubArgs::Qemu { qemu, extra_args } => qemu::run(env, qemu, extra_args),
-        SubArgs::Toolchain { branch } => build::build_toolchain(env, &branch),
+        SubArgs::Toolchain { branch } => {
+            let branch = branch.as_ref().unwrap_or(&env.config.toolchain.branch);
+            build::build_toolchain(&env, branch)
+        }
         SubArgs::HostTriple => {
             println!("{}", env.host_triple);
             Ok(())