Bug#962741: apt: illegal package name in EDSP Provides field when installing from *.deb

[Johannes 'josch' Schauer]

Package: apt
Version: 2.1.6
Severity: normal

Hi,

steps to reproduce:

    $ cd /tmp
    $ equivs-build /usr/share/doc/equivs/examples/webserver.ctl
    $ APT_EDSP_DUMP_FILENAME=/tmp/dump.edsp apt install --simulate --solver 
dump /tmp/webserver-dummy_1.0_all.deb
    $ grep webserver-dummy /tmp/dump.edsp
    Install: webserver-dummy:amd64
    Package: webserver-dummy
    Source: webserver-dummy
    Provides: /tmp/webserver-dummy_1.0_all.deb (= 1.0), httpd, httpd, httpd

The problem is, that the full path of the *.deb file is added to the
EDSP Provides field but even the package filename by itself is not a
valid package name. Consequently, apt-cudf will error out when it
receives such an EDSP file.

Thanks!

cheers, josch