Source: guile-2.2
Version: 2.2.7+1-5
Severity: serious
Tags: ftbfs
Usertags: rebootstrap

While bootstrap testing unstable, I noticed that guile-2.2 fails to
build from source (natively). A build now ends quicky:

| dpkg-buildpackage: info: source package guile-2.2
| dpkg-buildpackage: info: source version 2.2.7+1-5
| dpkg-buildpackage: info: source distribution unstable
| dpkg-buildpackage: info: source changed by Rob Browning 
|  dpkg-source --before-build .
| dpkg-buildpackage: info: host architecture amd64
|  fakeroot debian/rules clean
| /bin/bash: ${\#x}: bad substitution
| debian/rules:70: *** ERROR: alternatives priority expects min version < 1000. 
| dpkg-buildpackage: error: fakeroot debian/rules clean subprocess returned 
exit status 2

This only happens since make-dfsg/4.3-1, but I think the bug here
ultimately is with guile-2.2. The relevant code from debian/rules is:

| ifneq (ok,$(shell x='$(deb_src_min_ver)';  [ "$${\#x}" -lt 4 ] && echo ok;))
|   $(error ERROR: alternatives priority expects min version < 1000)
| endif

It is surprising that this didn't fail with earlier versions of make.
The shell substitution is clearly wrong. It is unclear what it is
supposed to achieve. In any case, deleting these lines makes the build


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