[Pkg-electronics-devel] Bug#981576: ghdl-common: missing Breaks+Replaces: ghdl (<< 0.37+dfsg2)

[Andreas Bombe]

On Mon, Feb 01, 2021 at 06:20:18PM +0100, Andreas Beckmann wrote:
> From the attached log (scroll to the bottom...):
> 
>   Preparing to unpack .../ghdl-common_0.37+dfsg2-1_amd64.deb ...
>   Unpacking ghdl-common (0.37+dfsg2-1) ...
>   dpkg: error processing archive /var/cache/apt/archives/ghdl-common_0.37+dfsg2-1_amd64.deb (--unpack):
>    trying to overwrite '/usr/bin/ghdl', which is also in package ghdl:amd64 0.37+dfsg-3
>   dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
>   Errors were encountered while processing:
>    /var/cache/apt/archives/ghdl-common_0.37+dfsg2-1_amd64.deb

Ah, I didn't notice that as I haven't tried installing ghdl-common on
its own with the older ghdl packages installed.

> BTW, did you really intend to move /usr/bin/ghdl to the -common package?
> That's rather unusual.
> (But you need the B+R also for splitting out the /usr/lib bits to -common.)

/usr/bin/ghdl is a shell script that selects one of the installed ghdl
variants and executes that, and it can be influenced by an environment
variable. In hindsight, I could have let /usr/bin/ghdl be handled by the
alternatives system and let users select a non-default ghdl by executing
the desired executable (ghdl-mcode, ghdl-gcc or ghdl-llvm) directly.

But as it is now it is in -common so that every ghdl installation also
provides /usr/bin/ghdl.