Hey guys, There is a paragraph "Local use via myEnvFun" at "Haskell" page <https://nixos.org/wiki/Haskell#Local_use_via_myEnvFun> describing so-called 'myEnvFun' flow and how it could be used for building an isolated development environment with bunch of utilities like 'hdevtools' and some others.
Despite the fact that there should be "pkgs.haskellPackages.ghcWithPackagesOld" used instead of "pkgs.haskellPackages.ghcWithPackages", this method have been working properly providing adequate environment for tools like hdevtools. There is a comment at the page added <https://nixos.org/w/index.php?title=Haskell&diff=24023&oldid=24000> by Goibhniu at February 28th saying "Warning: this is outdated. It is recommended to use nix-shell instead of myEnvFun". And this comment seems to be very legit, because in this new infrastructure hdevtools doesn't see any installed modules any more <https://gist.githubusercontent.com/dmalikov/8baef56b0e599037d454/raw/adcc78e9f1ecccb1ba937c717b22cdb94d7d0790/gistfile1.txt> . How to use hdevtools in haskellng infrastructure?
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