GLPK

[franktoffel]

The current recipe does not include the GLPK binaries in the system path:

[pyomo35] C:\Users\franz\Documents\GitHub\pyomo-instalacion\test_example\LP>pyomo solve --solver=glpk diet1.py diet.dat
[    0.00] Setting up Pyomo environment
[    0.00] Applying Pyomo preprocessing actions
[    0.01] Creating model
[    0.06] Applying solver
WARNING: "[base]\pyomo-4.2.10784-py3.5.egg\pyomo\solvers\plugins\solvers\GLPK_old.py", 68, executable
        Could not locate the 'glpsol' executable, which is required for solver 'glpk'
[    0.07] Pyomo Finished
ERROR: Unexpected exception while running model:
        No executable found for solver 'glpk'

Solution is to install GLPK with the following anaconda package: https://anaconda.org/snorfalorpagus/glpk

conda install -c https://conda.anaconda.org/snorfalorpagus glpk

[astrojuanlu]

No problems making people installing packages from two channels (just an extra step), but for the sake of completeness would you tell me if this recipe worked for you then?

https://github.com/snorfalorpagus/conda-recipes/tree/master/glpk

If it does we can include it here, it even has some testing :tada:

[astrojuanlu]

By the way, I think I know why it doesn't work. The current recipe is copying the binary to the wrong location:

https://github.com/CAChemE/pyomo-recipes/blob/683f21d/glpk/bld.bat#L10

Whereas the other recipe is effectively using conda environment variable LIBRARY_BIN (see http://conda.pydata.org/docs/building/environment-vars.html):

https://github.com/snorfalorpagus/conda-recipes/blob/116af80/glpk/bld.bat#L5

[astrojuanlu]

GLPK works now!