[Pbuilder-maint] Bug#347935: /usr/bin/pdebuild: Again, the PATH environment variable is lost within pdebuild/pbuilder

[Mike Hommey]

Package: pbuilder
Version: 0.144
Severity: normal
File: /usr/bin/pdebuild

I noticed recently that my pbuilders stopped using ccache for some
reason.

It seems, after investigation, that su -p changed its behaviour
recently, and doesn't preserve the PATH environment variable anymore.

I don't know if it should be reported as a bug in su, or if the new
behaviour is intended, but the result is still that pbuilder loses the
PATH environment variable. Note that i haven't checked if it actually works
with an older login package.

namakemono:/home/mh# export PATH=/usr/lib/ccache:${PATH}
namakemono:/home/mh# echo 'echo $PATH' | su -p
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11
namakemono:/home/mh# echo 'echo $PATH' | su -p mh
/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games

Interestingly, using su -c instead of the method used by pbuilder, with
the pipe, works perfectly:
namakemono:/home/mh# su -p -c 'echo $PATH'
/usr/lib/ccache:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11
namakemono:/home/mh# su -p mh -c 'echo $PATH'
/usr/lib/ccache:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-2-686
Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8)

Versions of packages pbuilder depends on:
ii  cdebootstrap                  0.3.9      Bootstrap a Debian system
ii  coreutils                     5.93-5     The GNU core utilities
ii  debianutils                   2.15.2     Miscellaneous utilities specific t
ii  debootstrap                   0.3.3      Bootstrap a basic Debian system
ii  gcc                           4:4.0.2-2  The GNU C compiler
ii  wget                          1.10.2-1   retrieves files from the web

Versions of packages pbuilder recommends:
ii  devscripts                    2.9.10     Scripts to make the life of a Debi
ii  fakeroot                      1.5.6      Gives a fake root environment
ii  sudo                          1.6.8p12-1 Provide limited super user privile

-- no debconf information