Bug#728198: devscripts: debuild (& others) must reject debian/rules actions on unpatched source trees

[Ximin Luo]

Package: devscripts
Version: 2.13.4
Severity: important

It does not make sense to build or clean an unpatched source tree, since the
applied patches are considered strictly *part of the source package*. However,
`debuild build/clean`, and probably many other tools, still allows this to
happen without any warning.

This is partly a fault of policy which is very loose on what is a correct state
to initiate build actions from; I will file a separate bug for that too.

http://www.debian.org/doc/debian-policy/ch-source.html

-- Package-specific info:

--- /etc/devscripts.conf ---

--- ~/.devscripts ---
Not present

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.10-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages devscripts depends on:
ii  dpkg-dev     1.16.12
ii  libc6        2.17-93
ii  perl         5.18.1-4
ii  python3      3.3.2-17
pn  python3:any  <none>

Versions of packages devscripts recommends:
ii  at                        3.1.14-1
ii  curl                      7.32.0-1
ii  dctrl-tools               2.23
ii  debian-keyring            2013.07.31
ii  dput                      0.9.6.4
ii  equivs                    2.0.9
ii  fakeroot                  1.18.4-2
ii  gnupg                     1.4.15-1.1
ii  libcrypt-ssleay-perl      0.58-1+b1
ii  libdistro-info-perl       0.11
ii  libencode-locale-perl     1.03-1
ii  libjson-perl              2.59-1
ii  libparse-debcontrol-perl  2.005-4
ii  libsoap-lite-perl         0.716-1
ii  liburi-perl               1.60-1
ii  libwww-perl               6.05-1
ii  lintian                   2.5.19
ii  man-db                    2.6.5-2
ii  patch                     2.7.1-3
ii  patchutils                0.3.2-2
ii  python3-debian            0.1.21+nmu2
ii  python3-magic             1:5.14-2
ii  sensible-utils            0.0.9
ii  strace                    4.5.20-2.3
ii  unzip                     6.0-9
ii  wdiff                     1.1.2-1
ii  wget                      1.14-4
ii  xz-utils                  5.1.1alpha+20120614-2

Versions of packages devscripts suggests:
ii  bsd-mailx [mailx]            8.1.2-0.20131005cvs-1
ii  build-essential              11.6
pn  cvs-buildpackage             <none>
pn  devscripts-el                <none>
ii  gnuplot                      4.6.3-2
ii  gpgv                         1.4.15-1.1
ii  heirloom-mailx [mailx]       12.5-2
ii  libauthen-sasl-perl          2.1500-1
ii  libfile-desktopentry-perl    0.07-1
ii  libnet-smtp-ssl-perl         1.01-3
pn  libterm-size-perl            <none>
ii  libtimedate-perl             1.2000-1
ii  libyaml-syck-perl            1.27-2+b1
ii  mutt                         1.5.21-6.4
ii  openssh-client [ssh-client]  1:6.2p2-6
pn  svn-buildpackage             <none>
ii  w3m                          0.5.3-11

-- no debconf information