[Aptitude-devel] Bug#825707: aptitude: should not regard a package as removed when another package has a Provides on it

[Vincent Lefevre]

Package: aptitude
Version: 0.8.1-1
Severity: wishlist

In the gnuplot5-data upgrade, one has:

Package: gnuplot5-data
Source: gnuplot5
Version: 5.0.3+dfsg2-1
Depends: aglfn, gnuplot-tex

currently installed, and the new version has:

Package: gnuplot5-data
Source: gnuplot5
Version: 5.0.3+dfsg2-2
Replaces: gnuplot-tex
Provides: gnuplot-tex
Depends: aglfn
Breaks: gnuplot-tex

Unfortunately, when I try an upgrade, gnuplot-tex is regarded as
removed (the real package is removed, but due to the Provides,
the package should still be regarded as being present).

At least "aptitude safe-upgrade", "aptitude full-upgrade", and "U"
in the UI are affected, i.e. aptitude proposes to keep gnuplot5-data
as the default choice.

Moreover, even with the solution where gnuplot-tex is removed,
aptitude does not say that it is provided by gnuplot5-data, so
that one has the impression that something is lost.

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

aptitude version information:
aptitude 0.8.1
Compiler: g++ 5.3.1 20160429
Compiled against:
  apt version 5.0.0
  NCurses version 6.0
  libsigc++ version: 2.8.0
  Gtk+ support disabled.
  Qt support disabled.

Current library versions:
  NCurses version: ncurses 6.0.20160319
  cwidget version: 0.5.17
  Apt version: 5.0.0

aptitude linkage:
	linux-vdso.so.1 (0x00007ffd80814000)
	libgtk3-nocsd.so.0 => /usr/lib/x86_64-linux-gnu/libgtk3-nocsd.so.0 (0x00007fe0ee42b000)
	libapt-pkg.so.5.0 => /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0 (0x00007fe0ee0b3000)
	libncursesw.so.5 => /lib/x86_64-linux-gnu/libncursesw.so.5 (0x00007fe0ede82000)
	libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007fe0edc58000)
	libsigc-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libsigc-2.0.so.0 (0x00007fe0eda51000)
	libcwidget.so.3 => /usr/lib/x86_64-linux-gnu/libcwidget.so.3 (0x00007fe0ed753000)
	libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007fe0ed44f000)
	libboost_iostreams.so.1.58.0 => /usr/lib/x86_64-linux-gnu/libboost_iostreams.so.1.58.0 (0x00007fe0ed235000)
	libboost_filesystem.so.1.58.0 => /usr/lib/x86_64-linux-gnu/libboost_filesystem.so.1.58.0 (0x00007fe0ed01b000)
	libboost_system.so.1.58.0 => /usr/lib/x86_64-linux-gnu/libboost_system.so.1.58.0 (0x00007fe0ece17000)
	libxapian.so.22 => /usr/lib/x86_64-linux-gnu/libxapian.so.22 (0x00007fe0eca13000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fe0ec7f5000)
	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fe0ec475000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fe0ec177000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fe0ebf60000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fe0ebbbc000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fe0eb9b8000)
	libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007fe0eb7b4000)
	libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007fe0eb59d000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fe0eb382000)
	libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007fe0eb171000)
	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007fe0eaf4e000)
	liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007fe0ead3c000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fe0eab33000)
	libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007fe0ea92e000)
	/lib64/ld-linux-x86-64.so.2 (0x0000556923c4b000)

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.5.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages aptitude depends on:
ii  aptitude-common            0.8.1-1
ii  libapt-pkg5.0              1.2.12
ii  libboost-filesystem1.58.0  1.58.0+dfsg-5+b1
ii  libboost-iostreams1.58.0   1.58.0+dfsg-5+b1
ii  libboost-system1.58.0      1.58.0+dfsg-5+b1
ii  libc6                      2.22-9
ii  libcwidget3v5              0.5.17-4+b1
ii  libgcc1                    1:6.1.1-4
ii  libncursesw5               6.0+20160319-1
ii  libsigc++-2.0-0v5          2.8.0-1
ii  libsqlite3-0               3.13.0-1
ii  libstdc++6                 6.1.1-4
ii  libtinfo5                  6.0+20160319-1
ii  libxapian22v5              1.2.23-1

Versions of packages aptitude recommends:
ii  libparse-debianchangelog-perl  1.2.0-8
ii  sensible-utils                 0.0.9

Versions of packages aptitude suggests:
ii  apt-xapian-index                0.47+nmu2
ii  aptitude-doc-en [aptitude-doc]  0.8.1-1
pn  debtags                         <none>
ii  tasksel                         3.34

-- no debconf information