[rpms/python-pint] rpmlint-etc: More correctly unbundle flexcache

[Benjamin A. Beasley <code@musicinmybrain.net>]

            A new commit has been pushed.

            Repo   : rpms/python-pint
            Branch : rpmlint-etc
            Commit : 799b93479ac79a9829fec2dd81f6b2e13e170709
            Author : Benjamin A. Beasley <code@musicinmybrain.net>
            Date   : 2023-10-31T16:53:57-04:00
            Stats  : +3/-2 in 1 file(s)
            URL    : https://src.fedoraproject.org/rpms/python-pint/c/799b93479ac79a9829fec2dd81f6b2e13e170709?branch=rpmlint-etc

            Log:
            More correctly unbundle flexcache

The old approach works, but the exact replacement for
pint._vendor.flexcache should be flexcache.flexcache, not just
flexcache.

Furthermore, this correctly replaces “from pint._vendor” if that appears
in the test suite.

---
diff --git a/python-pint.spec b/python-pint.spec
index f4d8ce5..a1cc74b 100644
--- a/python-pint.spec
+++ b/python-pint.spec
@@ -74,10 +74,11 @@ sed -r -i 's/^setup_requires/install_requires = appdirs; flexcache\n&/' \
 # The find-then-modify pattern keeps us from discarding mtimes on sources that
 # do not need modification.
 find pint -type f -exec \
-    gawk '/^from \.+_vendor import (appdirs|flexcache)/ {
+    gawk '/^from (\.*|pint)\._vendor import (appdirs|flexcache)/ {
         print FILENAME; nextfile }' '{}' '+' |
   xargs -r -t sed -r -i \
-      's/^from \.+_vendor (import (appdirs|flexcache))/\1/'
+      -e 's/^from (\.*|pint)\._vendor (import (appdirs))/\2/' \
+      -e 's/^(from )(\.*|pint)\._vendor( import (flexcache))/\1\4\3/'
 
 %generate_buildrequires
 # We omit the “uncertainties” extra because python-uncertainties is not yet