question: how not to use nlpi_ipopt which depend on proprietray libhsl.so?

[dzmitry-lahoda]

I run solver and get:

 time | node  | left  |LP iter|LP it/n|mem/heur|mdpt |vars |cons |rows |cuts |sepa|confs|strbr|  dualbound   | primalbound  |  gap   | compl. 
  0.0s|     1 |     0 |   122 |     - |  3661k |   0 | 290 | 215 | 185 |   0 |  0 |   0 |   0 |-1.975381e+03 |      --      |    Inf | unknown
[/build/c4jcdrx22yknk9r6af8p6l70zf8p9vja-source/src/scip/nlpi_ipopt.cpp:465] ERROR: Exception of type: DYNAMIC_LIBRARY_FAILURE in file "Common/IpLibraryLoader.cpp" at line 67:
 Exception message: libhsl.so: cannot open shared object file: No such file or directory
[nlpi_ipopt.cpp:1626] ERROR: Ipopt returned with application return status -12
[nlpi.c:605] ERROR: Error <0> in function call

I am on nixos, it is hard to use proprietary sotware. How to make sure I do not use that lib(what is that lib? solver? presolver? some heuristic?)

[dzmitry-lahoda]

all NLP solvers are proprietary, and question seems to IPOPS.

[svigerske]

This exception typically comes up if one has build Ipopt without any linear solver. It then tries to load those from HSL from a shared library at runtime. Next to those from HSL, you can build Ipopt with other linear solvers (https://coin-or.github.io/Ipopt/index.html#PREREQUISITES).

[dzmitry-lahoda]

Was able to compile IPOPT with MUMPS.

So if MUMPS configured/built with 64 bit integer support fails to compile with IPOPT.