Multiple packages provide phpapi-20090626; package must select one

[Marcin Juszkiewicz]

Binary package hint: xdeb

I am using xdeb in Maverick amd64 chroot with my ARM cross compiler packages installed. Tried to build gmp resulted in ugly bug:

hrw@home:~/xdeb$ xdeb -a armel --apt-source --prefer-apt gmp
Building source package cache ...
[sudo] password for hrw:
Building working tree cache ...
Traceback (most recent call last):
  File "/usr/bin/xdeb", line 768, in <module>
    main()
  File "/usr/bin/xdeb", line 735, in main
    expand_depends(options, pkg, 0)
  File "/usr/bin/xdeb", line 250, in expand_depends
    parent=src, parent_binary=binary)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 250, in expand_depends
    parent=src, parent_binary=binary)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 250, in expand_depends
    parent=src, parent_binary=binary)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 250, in expand_depends
    parent=src, parent_binary=binary)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 233, in expand_depends
    expand_depends(options, bd_pkg, depth + 1, parent=src)
  File "/usr/bin/xdeb", line 245, in expand_depends
    real_dep = get_real_pkg(options, or_dep['name'])
  File "/usr/bin/xdeb", line 53, in get_real_pkg
    real_pkg = aptutils.get_real_pkg(pkg)
  File "/usr/lib/xdeb/aptutils.py", line 108, in get_real_pkg
    "Multiple packages provide %s; package must select one" % pkg
aptutils.MultipleProvidesException: Multiple packages provide phpapi-20090626; package must select one

[Marcin Juszkiewicz (hrw)]

Same with gtk+2.0, qt4-x11, mc as target

[Wookey (wookey)]

phpapi-20090626 is provided by 4 packages: libapache2-mod-php5filter, php5-cli, php5-cgi, libapache2-mod-php5

Arbitrarily choosing the first does not seem very helpful here (in a cross-building context). I'm not sure if this dep is genuinely required for cross-building, but it seems senisble to choose php5-cli as the most appropriate way of running anything that needs it.

This looks like an instance of a set of cases where there is a choice of fulfillers of a virtual dep, and 'best' answer should be selected for cross-building. Adding a set of mappings for these choices would seem like the right solution, probably via xdeb.cfg

[Loïc Minier (lool)]

Fixed in 0.6

xdeb (0.6) maverick; urgency=low

  [ Loïc Minier ]
  * Improve Description, as suggested by James Westby.
  * Use debian module when available instead of debian_bundle; thanks
    Marcin Juszkiewicz.
  * Recommend gcc as to avoid a dpkg-architecture warning: "Couldn't determine
    gcc system type, falling back to default (native compilation)".
  * Recommend fakeroot as it's the default rootcmd of debuild and will break
    the build with "fatal error at line 945: problem running fakeroot".
  * Depend on build-essential, dpkg-checkbuilddeps wants it unconditionally.

  [ Colin Watson ]
  * PEP-8 indentation throughout.
  * Fix TargetConfig.native_import_source not to crash if that configuration
    element isn't present.
  * Check blacklist separately for virtual package names in dependencies.
  * Blacklist phpapi-20090626 and phpapi-20090626+lfs.
  * Add --only-explicit option to native-import everything that isn't
    explicitly listed on the command line. This avoids a number of
    dependency cycles.