Package: aptitude
Version: 0.7.4-1

Hi,

While checking why gnudatalanguage has "BD-Uninstallable" on most
architectures, I tried to install all build-dependencies locally.

First I checked what's missing in the extracted source package:

$ dpkg-checkbuilddeps
dpkg-checkbuilddeps: error: Unmet build dependencies: chrpath libeigen3-dev 
libgsl0-dev libgraphicsmagick++1-dev libplplot-dev (>= 5.10.0+dfsg-1~) | 
libplplot-dev (<= 5.10)

Looked reasonable.

Then I tried to install those packages as follows:

# aptitude build-dep gnudatalanguage
Unable to satisfy the build-depends: Build-Depends: libncurses-dev.
Unable to satisfy the build-depends: Build-Depends: libplplot-dev ( 
5.10.0+dfsg-1~) | libplplot-dev ( 5.10).
Unable to satisfy the build-depends: Build-Depends: libncurses-dev.
Unable to satisfy the build-depends: Build-Depends: libplplot-dev ( 
5.10.0+dfsg-1~) | libplplot-dev ( 5.10).
The following NEW packages will be installed:
  chrpath libeigen3-dev libgraphicsmagick++1-dev libgraphicsmagick1-dev{a} 
libgsl0-dev 
0 packages upgraded, 5 newly installed, 0 to remove and 2 not upgraded.
Need to get 3,185 kB of archives. After unpacking 20.2 MB will be used.
Do you want to continue? [Y/n/?] 

Please note the missing ">=" and "<=" in the error messages (compared to
the dpkg-checkbuilddeps output) while the space behind them is there.

Also the trailing dot at the end of all these error messages looks wrong
-- but is probably not a technical issue, just a question of grammar.

The following are the full build-dependencies from apt-cache showsrc
gnudatalanguage on the same machine:

Build-Depends: chrpath, cmake, debhelper (>= 9~), dpkg-dev (>= 1.16.1~), 
libantlr-dev, libeigen3-dev, libfftw3-dev, libgrib-api-dev, libgsl0-dev, 
libhdf4-alt-dev, libhdf5-dev | libhdf5-serial-dev, libgraphicsmagick++1-dev, 
libncurses-dev, libnetcdf-dev, libplplot-dev (>= 5.10.0+dfsg-1~) | 
libplplot-dev (<= 5.10), libreadline-dev, libudunits2-dev, libwxgtk3.0-dev, 
pslib-dev, python-all-dev, python-numpy, xauth, xvfb, zlib1g-dev

libncurses-dev is btw. a virtual package while libplplot-dev isn't.

So the reason for the error message about libncurses-dev is
https://bugs.debian.org/509100 (aptitude: build-dep fails when a
virtual package is needed), but the fact that there is even an error
message for libplplot-dev is maybe related to the fact that the
comparison operator is not shown.

JFTR what apt-get would do (afterwards):

# apt-get build-dep gnudatalanguage
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following NEW packages will be installed:
  libcsiro0 libplplot-c++11 libplplot-dev libplplot-fortran10 libplplot12 
libqhull-dev libqsastime-dev libqsastime0
  plplot12-driver-qt plplot12-driver-wxwidgets
0 upgraded, 10 newly installed, 0 to remove and 2 not upgraded.
Need to get 1,265 kB of archives.
After this operation, 6,236 kB of additional disk space will be used.
Do you want to continue? [Y/n] 

-- Package-specific info:
Terminal: eterm-color
$DISPLAY is set.
which aptitude: /usr/bin/aptitude

aptitude version information:
aptitude 0.7.4 compiled at Oct 16 2015 12:35:50
Compiler: g++ 5.2.1 20151010
Compiled against:
  apt version 4.16.0
  NCurses version 6.0
  libsigc++ version: 2.6.1
  Gtk+ support disabled.
  Qt support disabled.

Current library versions:
  NCurses version: ncurses 6.0.20150810
  cwidget version: 0.5.17
  Apt version: 4.16.0

aptitude linkage:
        linux-vdso.so.1 (0x00007fff65194000)
        libapt-pkg.so.4.16 => /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.16 
(0x00007f95af5d0000)
        libncursesw.so.5 => /lib/x86_64-linux-gnu/libncursesw.so.5 
(0x00007f95af3a0000)
        libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 
(0x00007f95af175000)
        libsigc-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libsigc-2.0.so.0 
(0x00007f95aef6f000)
        libcwidget.so.3 => /usr/lib/x86_64-linux-gnu/libcwidget.so.3 
(0x00007f95aec70000)
        libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 
(0x00007f95ae9a2000)
        libboost_iostreams.so.1.58.0 => 
/usr/lib/x86_64-linux-gnu/libboost_iostreams.so.1.58.0 (0x00007f95ae789000)
        libxapian.so.22 => /usr/lib/libxapian.so.22 (0x00007f95ae387000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 
(0x00007f95ae169000)
        libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 
(0x00007f95addee000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f95adaed000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 
(0x00007f95ad8d6000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f95ad52d000)
        libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007f95ad32a000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f95ad125000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f95acf0a000)
        libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 
(0x00007f95accfa000)
        liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f95acad6000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f95ac8ce000)
        libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f95ac6c8000)
        /lib64/ld-linux-x86-64.so.2 (0x000055a85d468000)
-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (990, 'unstable'), (600, 'testing'), (500, 'buildd-unstable'), 
(400, 'stable'), (110, 'experimental'), (1, 'buildd-experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-trunk-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages aptitude depends on:
ii  aptitude-common           0.7.4-1
ii  libapt-pkg4.16            1.0.10.2
ii  libboost-iostreams1.58.0  1.58.0+dfsg-3.1
ii  libc6                     2.19-22
ii  libcwidget3v5             0.5.17-4
ii  libgcc1                   1:5.2.1-22
ii  libncursesw5              6.0+20150810-1
ii  libsigc++-2.0-0v5         2.6.1-2
ii  libsqlite3-0              3.8.11.1-1
ii  libstdc++6                5.2.1-22
ii  libtinfo5                 6.0+20150810-1
ii  libxapian22v5             1.2.21-1.2

Versions of packages aptitude recommends:
ii  aptitude-doc-en [aptitude-doc]  0.7.4-1
ii  libparse-debianchangelog-perl   1.2.0-8
ii  sensible-utils                  0.0.9

Versions of packages aptitude suggests:
pn  apt-xapian-index  <none>
pn  debtags           <none>
ii  tasksel           3.33

-- no debconf information

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