Ins and Outs of Inputs

*Edit:* Yes, there is fedpkg lint but it somewhat limited so read on. Instead of addition of "rpmlint" command Pingou will improve current lint

Recently I was trying to help OpenSuSE guys with some updates to their Java stack and I was sent link to their build system. I noticed a file called jpackage-utils-rpmlintrc and this got me thinking...

What if we added rpmlint command to fedpkg with per-package rpmlint ignore settings? Turns out Pingou took my idea and implemented it in under an hour :-)

An example run:

$ fedpkg rpmlint
plexus-interpolation.spec: W: invalid-url Source0: plexus-interpolation-1.14.tar.xz
0 packages and 1 specfiles checked; 0 errors, 1 warnings.

plexus-interpolation.spec: W: invalid-url Source0: plexus-interpolation-1.14.tar.xz
plexus-interpolation.src: W: spelling-error %description -l en_US interpolator -> interpolate, interpolation, interrogator
plexus-interpolation.src: W: invalid-url Source0: plexus-interpolation-1.14.tar.xz
1 packages and 1 specfiles checked; 0 errors, 3 warnings.
2 packages run
rpmlint has not been run on rpm files but should

OK, so we can run rpmlint on spec, srpm and binary rpms with single command. But I don't like to see the same warnings all the time, because that means I will probably miss real problems when they appear. For this fedpkg rpmlint uses .rpmlint file as additional rpmlint config. So after creating:

$ cat > .rpmlint << EOF
# we have scm checkout with comment in spec
addFilter('invalid-url')
# false positive
addFilter('spelling-error.*interpolator')
EOF
$ fedpkg rpmlint
0 packages and 1 specfiles checked; 0 errors, 0 warnings.

1 packages and 1 specfiles checked; 0 errors, 0 warnings.
2 packages run
rpmlint has not been run on rpm files but should

Cool right? Pierre sent patch with this feature to fedpkg developers, so hopefully we'll see this addition soon. I then plan to add custom .rpmlint configurations to all my packages so that they will be warning-free.

I've noticed quite a few times that people add comments to their Source0: urls without macros to seemingly simplify manual downloading. It looks like this:

Name:      jsoup
Version:   1.6.1
...
# http://jsoup.org/packages/jsoup-1.6.1-sources.jar
Source0:        http://%{name}.org/packages/%{name}-%{version}-sources.jar

This creates burden on maintainers to keep those urls up-to-date as version changes, so I created simple python script for printing out Source urls from spec files:

#!/usr/bin/python

import rpm
import sys

ts=rpm.TransactionSet()
spec_obj = ts.parseSpec(sys.argv[1])

sources = spec_obj.sources

for url, num, flags in sources:
    print url

Chmod this +x, put into your PATH and enjoy by giving it path to spec file.
*Edit*: Probably much nicer way to do the same thing already present on your system (courtesy of Alexander Kurtakov):

spectool X.spec

I knew there was something like this, but forgot what it was. Oh well...2 minutes lost.