Description of problem:
I try to create an rpm package for pandoc-citeproc because Fedoras current version fails for me. In order to do so, I also need to create an rpm of xml-conduit. I read about Haskell package creation on https://fedoraproject.org/wiki/Packaging:Haskell and tried to create a spec file for xml-conduit with cabal rpm. The following happens:

cabal-rpm is not able to unpack the tgz:

[makerpm@L420 SOURCES]$ cabal-rpm spec xml-conduit-1.3.0.tar.gz 
cabal: The file does not exist 'xml-conduit-1.3.0.tar.gz'.
cabal-rpm: user error ("cabal unpack -v0 xml-conduit-1.3.0.tar.gz" failed with status 1)

But when I run cabal unpack manually, it works:

[makerpm@L420 SOURCES]$ cabal unpack -v0 xml-conduit-1.3.0.tar.gz 
[makerpm@L420 SOURCES]$ ls -l xml-conduit-1.3.0
total 28
-rw-rw-r--. 1 makerpm makerpm  533 May 17 14:35 ChangeLog.md
-rw-rw-r--. 1 makerpm makerpm 1368 May 17 14:35 LICENSE
-rw-rw-r--. 1 makerpm makerpm 1170 May 17 14:35 README.md
-rw-rw-r--. 1 makerpm makerpm  114 May 17 14:35 Setup.lhs
drwxrwxr-x. 2 makerpm makerpm 4096 May 17 14:35 test
drwxrwxr-x. 3 makerpm makerpm 4096 May 17 14:35 Text
-rw-rw-r--. 1 makerpm makerpm 2648 May 17 14:35 xml-conduit.cabal

When I then try to run cblrpm spec on the .cabal file itself, this happens:

[makerpm@L420 xml-conduit-1.3.0]$ cblrpm spec xml-conduit.cabal 
cabal: The file does not exist 'xml-conduit.cabal'.
cblrpm: user error ("cabal unpack -v0 xml-conduit.cabal" failed with status 1)

Version-Release number of selected component (if applicable):
0.9.5


How reproducible:
Always, see description.

Steps to Reproduce:
1.
2.
3.

Actual results:
cabal-rpm fails


Expected results:
cabal-rpm should create a spec file.

Additional info: