Preprocessing executable 'genprimopcode' for genprimopcode-0.1..                                                                     
Building executable 'genprimopcode' for genprimopcode-0.1..
[1 of 5] Compiling ParserM          ( ParserM.hs, dist/build/genprimopcode/genprimopcode-tmp/ParserM.o )                             
[2 of 5] Compiling Lexer            ( dist/build/genprimopcode/genprimopcode-tmp/Lexer.hs, dist/build/genprimopcode/genprimopcode-tmp
/Lexer.o )
[3 of 5] Compiling Syntax           ( Syntax.hs, dist/build/genprimopcode/genprimopcode-tmp/Syntax.o )                               
[4 of 5] Compiling Parser           ( dist/build/genprimopcode/genprimopcode-tmp/Parser.hs, dist/build/genprimopcode/genprimopcode-tm
p/Parser.o )
[5 of 5] Compiling Main             ( Main.hs, dist/build/genprimopcode/genprimopcode-tmp/Main.o )                                   
Linking dist/build/genprimopcode/genprimopcode ...
processing cache
copying package (source distribution): base
Warning: base.cabal:0:0: Unsupported cabal-version 2.1. See
https://github.com/haskell/cabal/issues/4899.
cabal: Failed parsing "./base.cabal".

builder for '/nix/store/xl9y0nghiaxvz0y1bynv17klcxp05k8f-configured-ghcjs-src.drv' failed with exit code 1
cannot build derivation '/nix/store/pkzsv415w85q31anc7kp134yrs4mgbfn-ghcjs-8.6.0.1.drv': 1 dependencies couldn't be built
building '/nix/store/sn4dgmg63mz7mlf9ckglhqigdxd7124d-jailbreak-cabal-1.3.5.drv'...
cannot build derivation '/nix/store/1fwm3rgdlbkh5q47gskq0rqlslc9wjbx-ghcjs-8.6.0.1-with-packages.drv': 1 dependencies couldn't be bui
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