create bsd12 branch

lang/rust/files/patch-src_bootstrap_bootstrap.py

@@ -0,0 +1,81 @@
+https://github.com/rust-lang/rust/commit/8d56bcc59c92
+
+--- src/bootstrap/bootstrap.py.orig	2019-11-04 15:45:21 UTC
++++ src/bootstrap/bootstrap.py
+@@ -102,10 +102,10 @@ def verify(path, sha_path, verbose):
+     return verified
+ 
+ 
+-def unpack(tarball, dst, verbose=False, match=None):
++def unpack(tarball, tarball_suffix, dst, verbose=False, match=None):
+     """Unpack the given tarball file"""
+     print("extracting", tarball)
+-    fname = os.path.basename(tarball).replace(".tar.gz", "")
++    fname = os.path.basename(tarball).replace(tarball_suffix, "")
+     with contextlib.closing(tarfile.open(tarball)) as tar:
+         for member in tar.getnames():
+             if "/" not in member:
+@@ -331,6 +331,18 @@ class RustBuild(object):
+         self.use_vendored_sources = ''
+         self.verbose = False
+ 
++        def support_xz():
++            try:
++                with tempfile.NamedTemporaryFile(delete=False) as temp_file:
++                    temp_path = temp_file.name
++                with tarfile.open(temp_path, "w:xz") as tar:
++                    pass
++                return True
++            except tarfile.CompressionError:
++                return False
++
++        self.tarball_suffix = '.tar.xz' if support_xz() else '.tar.gz'
++
+     def download_stage0(self):
+         """Fetch the build system for Rust, written in Rust
+ 
+@@ -349,12 +361,13 @@ class RustBuild(object):
+                  self.program_out_of_date(self.rustc_stamp())):
+             if os.path.exists(self.bin_root()):
+                 shutil.rmtree(self.bin_root())
+-            filename = "rust-std-{}-{}.tar.gz".format(
+-                rustc_channel, self.build)
++            filename = "rust-std-{}-{}{}".format(
++                rustc_channel, self.build, self.tarball_suffix)
+             pattern = "rust-std-{}".format(self.build)
+             self._download_stage0_helper(filename, pattern)
+ 
+-            filename = "rustc-{}-{}.tar.gz".format(rustc_channel, self.build)
++            filename = "rustc-{}-{}{}".format(rustc_channel, self.build,
++                                              self.tarball_suffix)
+             self._download_stage0_helper(filename, "rustc")
+             self.fix_executable("{}/bin/rustc".format(self.bin_root()))
+             self.fix_executable("{}/bin/rustdoc".format(self.bin_root()))
+@@ -365,14 +378,15 @@ class RustBuild(object):
+             # libraries/binaries that are included in rust-std with
+             # the system MinGW ones.
+             if "pc-windows-gnu" in self.build:
+-                filename = "rust-mingw-{}-{}.tar.gz".format(
+-                    rustc_channel, self.build)
++                filename = "rust-mingw-{}-{}{}".format(
++                    rustc_channel, self.build, self.tarball_suffix)
+                 self._download_stage0_helper(filename, "rust-mingw")
+ 
+         if self.cargo().startswith(self.bin_root()) and \
+                 (not os.path.exists(self.cargo()) or
+                  self.program_out_of_date(self.cargo_stamp())):
+-            filename = "cargo-{}-{}.tar.gz".format(cargo_channel, self.build)
++            filename = "cargo-{}-{}{}".format(cargo_channel, self.build,
++                                              self.tarball_suffix)
+             self._download_stage0_helper(filename, "cargo")
+             self.fix_executable("{}/bin/cargo".format(self.bin_root()))
+             with output(self.cargo_stamp()) as cargo_stamp:
+@@ -388,7 +402,7 @@ class RustBuild(object):
+         tarball = os.path.join(rustc_cache, filename)
+         if not os.path.exists(tarball):
+             get("{}/{}".format(url, filename), tarball, verbose=self.verbose)
+-        unpack(tarball, self.bin_root(), match=pattern, verbose=self.verbose)
++        unpack(tarball, self.tarball_suffix, self.bin_root(), match=pattern, verbose=self.verbose)
+ 
+     @staticmethod
+     def fix_executable(fname):