Resolving dependencies...
Starting     numerical-integration-0.1.0.0
Building     numerical-integration-0.1.0.0
Failed to install numerical-integration-0.1.0.0
Build log ( /home/builder/.cabal/logs/ghc-9.2.4/numerical-integration-0.1.0.0-70CLHTCI8Wr5x5apKOweOE.log ):
cabal: Entering directory '/tmp/cabal-tmp-454520/numerical-integration-0.1.0.0'
Configuring numerical-integration-0.1.0.0...
Preprocessing library for numerical-integration-0.1.0.0..
Building library for numerical-integration-0.1.0.0..
[1 of 1] Compiling Numerical.Integration ( src/Numerical/Integration.hs, dist/build/Numerical/Integration.o, dist/build/Numerical/Integration.dyn_o )

In file included from cpp/integration.cpp:5:0: error: 

cpp/Eigen/Eigenvalues:11:10: error:
     fatal error: Core: No such file or directory
       11 | #include "Core"
          |          ^~~~~~
   |
11 | #include "Core"
   |          ^
compilation terminated.
`gcc' failed in phase `C Compiler'. (Exit code: 1)
cabal: Leaving directory '/tmp/cabal-tmp-454520/numerical-integration-0.1.0.0'
Error: cabal: Some packages failed to install:
numerical-integration-0.1.0.0-70CLHTCI8Wr5x5apKOweOE failed during the
building phase. The exception was:
ExitFailure 1