[...]

No conditional flags passed
from available:
--with   :	
--without:	 prof
Available branches: master
Searching for tag auto/ti/ghc-syb-0.4.1-1...
Searching for tag auto/ti/ghc-syb-0_4_1-1...
--2017-10-21 15:15:45--  http://distfiles.pld-linux.org/distfiles/by-md5/2/8/28df3b70cef652fa6c04e6353c580a7a/syb-0.4.1.tar.gz
Resolving distfiles.pld-linux.org (distfiles.pld-linux.org)... 193.239.45.41
Connecting to distfiles.pld-linux.org (distfiles.pld-linux.org)|193.239.45.41|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 38699 (38K) [application/x-gzip]
Saving to: 'syb-0.4.1.tar.gz'
     0K .......... .......... .......... .......              100% 1.64M=0.02s
2017-10-21 15:15:45 (1.64 MB/s) - 'syb-0.4.1.tar.gz' saved [38699/38699]
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/ghc-syb-0.4.1-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at 5a5bfcc... - complete ghc dependencies list, noautocompressdoc *.haddock
fatal: HEAD does not point to a branch
No conditional flags passed
from available:
--with   :	
--without:	 prof
Writing git revision for tag auto/ti/ghc-syb-0.4.1-1
On detached HEAD. Use -r BRANCHNAME to override
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.53837
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf syb-0.4.1
Begin-TLD-Builder-Info
Build-Time: user:0.60s sys:0.10s real:1.87s (faults io:0 non-io:85727)
Files queued for ftp:
     44525 ghc-syb-0.4.1-1.src.rpm
       185 ghc-syb-0.4.1-1.src.rpm.uploadinfo
End-TLD-Builder-Info