Hello,I have attached a debdiff where I import the collections.abc package which has the MutableSet attribute. With this fix, the package builds and `arriero --help` outputs the expected help menu. I can upload this RC bug fix as a NMU if you want. Thanks!
-- Josef Schneider GPG Fingerprint 3267 0331 DB61 A817 7D25 4D05 5A44 BC12 F2A8 E58F
diff -Nru arriero-0.7~20161228/debian/changelog arriero-0.7~20161228/debian/changelog --- arriero-0.7~20161228/debian/changelog 2022-04-29 01:44:11.000000000 +0200 +++ arriero-0.7~20161228/debian/changelog 2023-03-24 13:10:39.000000000 +0100 @@ -1,3 +1,10 @@ +arriero (0.7~20161228-1.2) unstable; urgency=medium + + * Non-maintainer upload. + * Add patch to import collections.abc in util.py (Closes: #1032380). + + -- Josef Schneider <josef81...@gmail.com> Fri, 24 Mar 2023 13:10:39 +0100 + arriero (0.7~20161228-1.1) unstable; urgency=medium * Non-maintainer upload. diff -Nru arriero-0.7~20161228/debian/patches/0001-import-collections-abc.patch arriero-0.7~20161228/debian/patches/0001-import-collections-abc.patch --- arriero-0.7~20161228/debian/patches/0001-import-collections-abc.patch 1970-01-01 01:00:00.000000000 +0100 +++ arriero-0.7~20161228/debian/patches/0001-import-collections-abc.patch 2023-03-24 13:10:39.000000000 +0100 @@ -0,0 +1,33 @@ +From 409dd804c2abb119582378cd6fa098ad8df01f3d Mon Sep 17 00:00:00 2001 +From: Josef Schneider <josef81...@gmail.com> +Date: Fri, 17 Mar 2023 13:16:43 +0100 +Subject: [PATCH] import collections.abc + +--- + arriero/util.py | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/arriero/util.py b/arriero/util.py +index 91e4121..07f877a 100644 +--- a/arriero/util.py ++++ b/arriero/util.py +@@ -17,6 +17,7 @@ + # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + + import collections ++import collections.abc + import fcntl + import io + import itertools +@@ -185,7 +186,7 @@ def chain_map(*ds, **kw): + return ChainMap(*itertools.chain(ds, [kw])) + + +-class OrderedSet(deb822.OrderedSet, collections.MutableSet): ++class OrderedSet(deb822.OrderedSet, collections.abc.MutableSet): + + discard = deb822.OrderedSet.remove + +-- +2.38.1 + diff -Nru arriero-0.7~20161228/debian/patches/series arriero-0.7~20161228/debian/patches/series --- arriero-0.7~20161228/debian/patches/series 1970-01-01 01:00:00.000000000 +0100 +++ arriero-0.7~20161228/debian/patches/series 2023-03-24 13:10:39.000000000 +0100 @@ -0,0 +1 @@ +0001-import-collections-abc.patch
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