[Bug 2027831] [NEW] Unexpected behavior of apt

[Brian Murray]

Public bug reported:

I was trying to install python3.10 on Ubuntu 20.04 and was quite
surprised when x11 packages ended up installed. I think it was due to
the regex matching of apt.

(focal-amd64)root at impulse:/home/bdmurray/source-trees/autopkgtest-cloud/autopkgtest-cloud# apt-get install python3.10
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'libqgispython3.10.4' for regex 'python3.10'
Note, selecting 'libpython3.10-stdlib' for regex 'python3.10'
...
The following NEW packages will be installed:
  fontconfig fontconfig-config fonts-dejavu-core gdal-data iso-codes libaec0 libarmadillo9 libarpack2 libavahi-client3
  libavahi-common-data libavahi-common3 libblas3 libbrotli1 libbsd0 libcap2 libcap2-bin libcfitsio8 libcharls2
  libcups2 libcurl3-gnutls libdap25 libdapclient6v5 libdbus-1-3 libdouble-conversion3 libdrm-amdgpu1 libdrm-common
  libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libdrm2 libedit2 libegl-mesa0 libegl1 libelf1 libepsilon1 libevdev2
  libexpat1 libfontconfig1 libfreetype6 libfreexl1 libfyba0 libgbm1 libgdal26 libgeos-3.8.0 libgeos-c1v5 libgeotiff5
  libgfortran5 libgif7 libgl1 libgl1-mesa-dri libglapi-mesa libglib2.0-0 libglvnd0 libglx-mesa0 libglx0 libgraphite2-3
  libgssapi-krb5-2 libgstreamer-plugins-base1.0-0 libgstreamer1.0-0 libgudev-1.0-0 libharfbuzz0b libhdf4-0-alt
  libhdf5-103 libhyphen0 libice6 libicu66 libinput-bin libinput10 libjbig0 libjpeg-turbo8 libjpeg8 libjson-c4
  libk5crypto3 libkeyutils1 libkmlbase1 libkmldom1 libkmlengine1 libkrb5-3 libkrb5support0 liblapack3 liblcms2-2
  libllvm12 libltdl7 libminizip1 libmpdec2 libmtdev1 libmysqlclient21 libnetcdf15 libnghttp2-14 libnspr4 libnss3
  libodbc1 libogdi4.1 libopenjp2-7 liborc-0.4-0 libpciaccess0 libpcre2-16-0 libpoppler97 libpq5 libproj15 libpsl5
  libpython3.8 libpython3.8-minimal libpython3.8-stdlib libqca-qt5-2 libqgis-core3.10.4 libqgispython3.10.4 libqhull7
  libqt5concurrent5 libqt5core5a libqt5dbus5 libqt5gui5 libqt5keychain1 libqt5network5 libqt5positioning5
  libqt5printsupport5 libqt5qml5 libqt5quick5 libqt5sensors5 libqt5serialport5 libqt5sql5 libqt5svg5 libqt5webchannel5
  libqt5webkit5 libqt5widgets5 libqt5xml5 librtmp1 libsensors-config libsensors5 libsm6 libspatialindex6
  libspatialite7 libssh-4 libssl1.1 libsuperlu5 libsz2 libtiff5 liburiparser1 libvulkan1 libwacom-common libwacom2
  libwayland-client0 libwayland-server0 libwebp6 libwoff1 libx11-6 libx11-data libx11-xcb1 libxau6 libxcb-dri2-0
  libxcb-dri3-0 libxcb-glx0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-present0 libxcb-randr0
  libxcb-render-util0 libxcb-render0 libxcb-shape0 libxcb-shm0 libxcb-sync1 libxcb-util1 libxcb-xfixes0
  libxcb-xinerama0 libxcb-xinput0 libxcb-xkb1 libxcb1 libxdmcp6 libxerces-c3.2 libxext6 libxfixes3 libxkbcommon-x11-0
  libxkbcommon0 libxml2 libxrender1 libxshmfence1 libxslt1.1 libxxf86vm1 libzip5 mime-support mysql-common
  ocl-icd-libopencl1 odbcinst odbcinst1debian2 proj-data tzdata ucf x11-common xkb-data
0 upgraded, 190 newly installed, 0 to remove and 0 not upgraded.
Need to get 118 MB of archives.

(focal-amd64)root at impulse:/home/bdmurray/source-trees/autopkgtest-cloud/autopkgtest-cloud# apt-cache policy apt
apt:
  Installed: 2.0.9
  Candidate: 2.0.9
  Version table:
 *** 2.0.9 500
        500 http://192.168.10.7/ubuntu focal-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     2.0.2ubuntu0.2 500
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
     2.0.2 500
        500 http://192.168.10.7/ubuntu focal/main amd64 Packages

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2027831

Title:
  Unexpected behavior of apt

Status in apt package in Ubuntu:
  New

Bug description:
  I was trying to install python3.10 on Ubuntu 20.04 and was quite
  surprised when x11 packages ended up installed. I think it was due to
  the regex matching of apt.

  (focal-amd64)root at impulse:/home/bdmurray/source-trees/autopkgtest-cloud/autopkgtest-cloud# apt-get install python3.10
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  Note, selecting 'libqgispython3.10.4' for regex 'python3.10'
  Note, selecting 'libpython3.10-stdlib' for regex 'python3.10'
  ...
  The following NEW packages will be installed:
    fontconfig fontconfig-config fonts-dejavu-core gdal-data iso-codes libaec0 libarmadillo9 libarpack2 libavahi-client3
    libavahi-common-data libavahi-common3 libblas3 libbrotli1 libbsd0 libcap2 libcap2-bin libcfitsio8 libcharls2
    libcups2 libcurl3-gnutls libdap25 libdapclient6v5 libdbus-1-3 libdouble-conversion3 libdrm-amdgpu1 libdrm-common
    libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libdrm2 libedit2 libegl-mesa0 libegl1 libelf1 libepsilon1 libevdev2
    libexpat1 libfontconfig1 libfreetype6 libfreexl1 libfyba0 libgbm1 libgdal26 libgeos-3.8.0 libgeos-c1v5 libgeotiff5
    libgfortran5 libgif7 libgl1 libgl1-mesa-dri libglapi-mesa libglib2.0-0 libglvnd0 libglx-mesa0 libglx0 libgraphite2-3
    libgssapi-krb5-2 libgstreamer-plugins-base1.0-0 libgstreamer1.0-0 libgudev-1.0-0 libharfbuzz0b libhdf4-0-alt
    libhdf5-103 libhyphen0 libice6 libicu66 libinput-bin libinput10 libjbig0 libjpeg-turbo8 libjpeg8 libjson-c4
    libk5crypto3 libkeyutils1 libkmlbase1 libkmldom1 libkmlengine1 libkrb5-3 libkrb5support0 liblapack3 liblcms2-2
    libllvm12 libltdl7 libminizip1 libmpdec2 libmtdev1 libmysqlclient21 libnetcdf15 libnghttp2-14 libnspr4 libnss3
    libodbc1 libogdi4.1 libopenjp2-7 liborc-0.4-0 libpciaccess0 libpcre2-16-0 libpoppler97 libpq5 libproj15 libpsl5
    libpython3.8 libpython3.8-minimal libpython3.8-stdlib libqca-qt5-2 libqgis-core3.10.4 libqgispython3.10.4 libqhull7
    libqt5concurrent5 libqt5core5a libqt5dbus5 libqt5gui5 libqt5keychain1 libqt5network5 libqt5positioning5
    libqt5printsupport5 libqt5qml5 libqt5quick5 libqt5sensors5 libqt5serialport5 libqt5sql5 libqt5svg5 libqt5webchannel5
    libqt5webkit5 libqt5widgets5 libqt5xml5 librtmp1 libsensors-config libsensors5 libsm6 libspatialindex6
    libspatialite7 libssh-4 libssl1.1 libsuperlu5 libsz2 libtiff5 liburiparser1 libvulkan1 libwacom-common libwacom2
    libwayland-client0 libwayland-server0 libwebp6 libwoff1 libx11-6 libx11-data libx11-xcb1 libxau6 libxcb-dri2-0
    libxcb-dri3-0 libxcb-glx0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-present0 libxcb-randr0
    libxcb-render-util0 libxcb-render0 libxcb-shape0 libxcb-shm0 libxcb-sync1 libxcb-util1 libxcb-xfixes0
    libxcb-xinerama0 libxcb-xinput0 libxcb-xkb1 libxcb1 libxdmcp6 libxerces-c3.2 libxext6 libxfixes3 libxkbcommon-x11-0
    libxkbcommon0 libxml2 libxrender1 libxshmfence1 libxslt1.1 libxxf86vm1 libzip5 mime-support mysql-common
    ocl-icd-libopencl1 odbcinst odbcinst1debian2 proj-data tzdata ucf x11-common xkb-data
  0 upgraded, 190 newly installed, 0 to remove and 0 not upgraded.
  Need to get 118 MB of archives.

  (focal-amd64)root at impulse:/home/bdmurray/source-trees/autopkgtest-cloud/autopkgtest-cloud# apt-cache policy apt
  apt:
    Installed: 2.0.9
    Candidate: 2.0.9
    Version table:
   *** 2.0.9 500
          500 http://192.168.10.7/ubuntu focal-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       2.0.2ubuntu0.2 500
          500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
       2.0.2 500
          500 http://192.168.10.7/ubuntu focal/main amd64 Packages

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