icestorm package is currently failing to build

[mithro]

https://travis-ci.com/github/SymbiFlow/conda-packages/jobs/320618046

 icestorm: - Info on  conda package
 -------------------------------------------------------------------
TRAVIS_EVENT_TYPE='cron'
TRAVIS_BRANCH='master'
TRAVIS_COMMIT='master'
TRAVIS_REPO_SLUG='SymbiFlow/conda-packages'
Fetching tags..
From https://github.com/cliffordwolf/icestorm
 * branch            HEAD       -> FETCH_HEAD
Initial set of tags:
Adding v0.0 to dfeb92a46b2228b4f3886a9c06502ccd0dde5562 (first commit in repository!)
Remaining tags
 * v0.0
Git describe output: 'v0.0-738-gd05659d'
Warning: failed to download source.  If building, will try again after downloading recipe dependencies.
Error was: 
Command '['/usr/bin/patch', '-p1', '--ignore-whitespace', '-i', '/home/travis/build/SymbiFlow/conda-packages/icestorm/noiceprog.patch']' returned non-zero exit status 1.
Error: Failed to render jinja template in /home/travis/build/SymbiFlow/conda-packages/icestorm/meta.yaml:
'GIT_DESCRIBE_TAG' is undefined
The command "bash $TRAVIS_BUILD_DIR/.travis/script.sh" exited with 1.
after_failure
1.19s$ bash $TRAVIS_BUILD_DIR/.travis/after_failure.sh
 - 
failure.tail
0.00s icestorm: -  Failure output...
 - 
failure.log.full
0.00s icestorm: -  Failure output.log...
Done. Your build exited with 1.

Seems to be an issue caused by the noiceprog patch.