From: Ximin Luo <infinity0@debian.org>
Date: Sun, 19 Sep 2021 18:48:33 +0000 (+0100)
Subject: Don't download SHA256 if it's already available locally
X-Git-Tag: archive/raspbian/1.59.0+dfsg1-1_deb11u3+rpi1~2^2^2~7
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=5f0850c960c683f360055e1efccd616506dc7881;p=rustc-mozilla.git

Don't download SHA256 if it's already available locally

Forwarded: not-needed

In Debian we provide the stage0 tarballs as a separate component so that the
buildds don't need to access the network during the build.
Forwarded: not-needed
Gbp-Pq: Name d-dont-download-stage0.patch
---

diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 5b283229b..5f777bb4e 100644
--- a/src/bootstrap/bootstrap.py
+++ b/src/bootstrap/bootstrap.py
@@ -24,17 +24,19 @@ def support_xz():
     except tarfile.CompressionError:
         return False
 
-def get(url, path, verbose=False, do_verify=True):
+def get(url, path, verbose=False, do_verify=True, use_local_hash_if_present=True):
     suffix = '.sha256'
     sha_url = url + suffix
     with tempfile.NamedTemporaryFile(delete=False) as temp_file:
         temp_path = temp_file.name
-    with tempfile.NamedTemporaryFile(suffix=suffix, delete=False) as sha_file:
-        sha_path = sha_file.name
+    sha_path = path + suffix
 
     try:
         if do_verify:
-            download(sha_path, sha_url, False, verbose)
+            if use_local_hash_if_present and os.path.exists(sha_path):
+                print("using already-download file " + sha_path)
+            else:
+                download(sha_path, sha_url, False, verbose)
             if os.path.exists(path):
                 if verify(path, sha_path, False):
                     if verbose:
@@ -52,7 +54,6 @@ def get(url, path, verbose=False, do_verify=True):
             print("moving {} to {}".format(temp_path, path))
         shutil.move(temp_path, path)
     finally:
-        delete_if_present(sha_path, verbose)
         delete_if_present(temp_path, verbose)
 
 
@@ -492,7 +493,7 @@ class RustBuild(object):
 
         url = "{}/dist/{}".format(self._download_url, date)
         tarball = os.path.join(rustc_cache, filename)
-        if not os.path.exists(tarball):
+        if True:
             get("{}/{}".format(url, filename), tarball, verbose=self.verbose)
         unpack(tarball, tarball_suffix, self.bin_root(), match=pattern, verbose=self.verbose)