travis: correctly constrain version

This commit is contained in:
Fabian Neumann 2020-12-04 18:53:12 +01:00
parent 1baa309252
commit 3ad6340c13

View File

@ -24,7 +24,7 @@ before_install:
- conda activate pypsa-eur
# install open-source solver
- mamba install -c conda-forge glpk ipopt<3.13.3
- mamba install -c conda-forge glpk ipopt'<3.13.3'
# list packages for easier debugging
- conda list