lang/rust/patches/0002-rustc-bootstrap-cache.patch

   1 --- a/src/bootstrap/bootstrap.py
   2 +++ b/src/bootstrap/bootstrap.py
   3 @@ -557,7 +557,7 @@ class RustBuild(object):
   4                  shutil.rmtree(bin_root)
   5
   6              key = self.stage0_compiler.date
   7 -            cache_dst = os.path.join(self.build_dir, "cache")
   8 +            cache_dst = os.getenv('OPENWRT_RUSTC_BOOTSTRAP_CACHE', os.path.join(self.build_dir, "cache"))
   9              rustc_cache = os.path.join(cache_dst, key)
  10              if not os.path.exists(rustc_cache):
  11                  os.makedirs(rustc_cache)
  12 --- a/src/bootstrap/src/core/download.rs
  13 +++ b/src/bootstrap/src/core/download.rs
  14 @@ -208,10 +208,13 @@ impl Config {
  15              Some(other) => panic!("unsupported protocol {other} in {url}"),
  16              None => panic!("no protocol in {url}"),
  17          }
  18 -        t!(
  19 -            std::fs::rename(&tempfile, dest_path),
  20 -            format!("failed to rename {tempfile:?} to {dest_path:?}")
  21 -        );
  22 +        match std::fs::rename(&tempfile, dest_path) {
  23 +            Ok(v) => v,
  24 +            Err(_) => {
  25 +                t!(std::fs::copy(&tempfile, dest_path));
  26 +                t!(std::fs::remove_file(&tempfile));
  27 +            }
  28 +        };
  29      }
  30
  31      fn download_http_with_retries(&self, tempfile: &Path, url: &str, help_on_error: &str) {
  32 @@ -577,7 +580,10 @@ impl Config {
  33              return;
  34          }
  35
  36 -        let cache_dst = self.out.join("cache");
  37 +        let cache_dst = match env::var_os("OPENWRT_RUSTC_BOOTSTRAP_CACHE") {
  38 +            Some(v) => PathBuf::from(v),
  39 +            None => self.out.join("cache"),
  40 +        };
  41          let cache_dir = cache_dst.join(key);
  42          if !cache_dir.exists() {
  43              t!(fs::create_dir_all(&cache_dir));
  44 @@ -704,7 +710,10 @@ download-rustc = false
  45          let llvm_assertions = self.llvm_assertions;
  46
  47          let cache_prefix = format!("llvm-{llvm_sha}-{llvm_assertions}");
  48 -        let cache_dst = self.out.join("cache");
  49 +        let cache_dst = match env::var_os("OPENWRT_RUSTC_BOOTSTRAP_CACHE") {
  50 +            Some(v) => PathBuf::from(v),
  51 +            None => self.out.join("cache"),
  52 +        };
  53          let rustc_cache = cache_dst.join(cache_prefix);
  54          if !rustc_cache.exists() {
  55              t!(fs::create_dir_all(&rustc_cache));