another attempt to exec ISABELLE_GHC robustly (cf. d8c3b26b3da4, 994d088fbfbc);
#main object logics
src/Pure
src/FOL
src/HOL
src/ZF
src/CCL
src/CTT
src/Cube
src/FOLP
src/LCF
src/Sequents
#misc components
src/Tools/Code
src/Tools/WWW_Find
src/HOL/Tools/ATP
src/HOL/Mirabelle
src/HOL/Library/Sum_of_Squares
src/HOL/Tools/SMT
src/HOL/Tools/Predicate_Compile
src/HOL/Mutabelle