Support 32-bit Linux running on 64-bit ARM arch.

A 32-bit Linux running on 64-bit ARM arch should have platform "linux_armv7l".
pypa · Nov 14, 2019 · ae53b60 · ae53b60
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commit ae53b60
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diff --git a/news/7352.bugfix b/news/7352.bugfix
@@ -0,0 +1 @@
+Support 32-bit Linux running on 64-bit ARM arch. A 32-bit Linux running on 64-bit ARM arch should have platform "linux_armv7l".
diff --git a/src/pip/_internal/pep425tags.py b/src/pip/_internal/pep425tags.py
@@ -156,10 +156,13 @@ def get_platform():
 
     # XXX remove distutils dependency
     result = distutils.util.get_platform().replace('.', '_').replace('-', '_')
-    if result == "linux_x86_64" and _is_running_32bit():
+    if _is_running_32bit():
         # 32 bit Python program (running on a 64 bit Linux): pip should only
         # install and run 32 bit compiled extensions in that case.
-        result = "linux_i686"
+        if result == "linux_x86_64":
+            result = "linux_i686"
+        elif result == "linux_aarch64":
+            result = "linux_armv7l"
 
     return result