Bug#946012: pyosmium unsatisfiable cross Build-Depends

[Helmut Grohne]

Source: pyosmium
Version: 2.15.3-1
Tags: patch
User: debian-cross at lists.debian.org
Usertags: cross-satisfiability

pyosmium cannot satisfy its cross Build-Depends. There are multiple
reasons for that. The ones reported by botch[1] are mainly sphinx and
mock, but also shapely.

The sphinx dependencies are only required for building the arch:all
documentation package. Thus they can be moved to Build-Depends-Indep and
become irrelevant to cross building.

mock and nose are test dependencies and can be made optional using the
nocheck profile.

I have less clue about shapely. I couldn't identify the actual use. Is
it really needed?

The attached patch implements the reductions for sphinx and mock. I used
reproducible builds and diffoscope to verify that these really are
correct. Please consider applying the patch and close this bug when
doing so.

Helmut

[1] The problem is only visible *before* fixing it at:
    https://bootstrap.debian.net/cross_all/pyosmium.html
-------------- next part --------------
diff --minimal -Nru pyosmium-2.15.3/debian/changelog pyosmium-2.15.3/debian/changelog
--- pyosmium-2.15.3/debian/changelog	2019-08-17 08:39:20.000000000 +0200
+++ pyosmium-2.15.3/debian/changelog	2019-12-02 17:00:55.000000000 +0100
@@ -1,3 +1,12 @@
+pyosmium (2.15.3-1.1) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Reduce build dependencies for cross building. (Closes: #-1)
+    + Move sphinx dependencies to Build-Depends-Indep.
+    + Annotate test dependencies with <!nocheck>.
+
+ -- Helmut Grohne <helmut at subdivi.de>  Mon, 02 Dec 2019 17:00:55 +0100
+
 pyosmium (2.15.3-1) unstable; urgency=medium
 
   * New upstream release.
diff --minimal -Nru pyosmium-2.15.3/debian/control pyosmium-2.15.3/debian/control
--- pyosmium-2.15.3/debian/control	2019-08-17 08:39:20.000000000 +0200
+++ pyosmium-2.15.3/debian/control	2019-12-02 17:00:55.000000000 +0100
@@ -16,9 +16,10 @@
                pybind11-dev,
                python3-all-dev,
                python3-setuptools,
-               python3-mock,
-               python3-nose,
+               python3-mock <!nocheck>,
+               python3-nose <!nocheck>,
                python3-shapely,
+Build-Depends-Indep:
                python3-sphinx,
                python3-sphinxcontrib.autoprogram
 Standards-Version: 4.4.0