[Pkg-phototools-devel] Bug#1009308:

[Mathieu Malaterre]

Control: tags -1 wontfix
Control: tags -1 - patch
Control: severity -1 normal

I am not sure I can integrate your patch since libimath-dev does
Provide: libilmbase-dev.

Also:

% sudo apt install libimath-dev
[...]
The following packages will be REMOVED:
  libilmbase-dev
The following NEW packages will be installed:
  libimath-dev
0 upgraded, 1 newly installed, 1 to remove and 0 not upgraded.
Need to get 117 kB of archives.
After this operation, 342 kB of additional disk space will be used.

I suspect there is something else going on wrong on your end. I am
tempted to just close.