Unable to build on NixOS

[Patrick Dougherty]

Huh,

So this is a bug I thought I dealt with :/
In the short term, I've found that often simply trying the build again can fix it. This is a dependency issue that I don't 100% understand.

For some more technical background, the "InfoTableProf" module is only built/needed when it is used with PROFILING. It uses CPP to "peek" into the StgInfoTable, which changes under profiling.

My impression is that dependency resolution decides that module isn't necessary, so then it is missing when it goes to use it. Again, I am not sure here, that's just what seemed to be the issue.

Best,
Patrick Dougherty
On May 26, 2018, 8:39 PM -0500, Sean D Gillespie <sean at mistersg.net>, wrote:
> Howdy,
>
> I am unable to build the latest revision of GHC on NixOS. I can build older revisions.
> Here's my error:
>
> ===--- building final phase
> make --no-print-directory -f ghc.mk phase=final all
> "inplace/bin/ghc-stage1" -hisuf p_hi -osuf p_o -hcsuf p_hc -static -prof -eventlog -H32m -O -Wall -this-unit-id ghc-heap-8.5 -hide-all-packages -i -ilibraries/ghc-heap/. -ilibraries/gh
> c-heap/dist-install/build -Ilibraries/ghc-heap/dist-install/build -ilibraries/ghc-heap/dist-install/build/./autogen -Ilibraries/ghc-heap/dist-install/build/./autogen -Ilibraries/ghc-heap/.
> -optP-include -optPlibraries/ghc-heap/dist-install/build/./autogen/cabal_macros.h -package-id base-4.12.0.0 -package-id ghc-prim-0.5.3 -package-id rts -Wall -XHaskell2010 -O2 -no-user-packa
> ge-db -rtsopts -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/ghc-heap/dist-install/build -hidir libraries/ghc-heap/dist-install/build -stubdir libraries/ghc-heap/
> dist-install/build -split-sections -c libraries/ghc-heap/./GHC/Exts/Heap/Closures.hs -o libraries/ghc-heap/dist-install/build/GHC/Exts/Heap/Closures.p_o -dyno libraries/ghc-heap/dist-instal
> l/build/GHC/Exts/Heap/Closures.dyn_o
>
> libraries/ghc-heap/GHC/Exts/Heap/Closures.hs:23:1: error:
> Could not find module `GHC.Exts.Heap.InfoTableProf'
> It is a member of the hidden package `ghc-heap-8.5'.
> You can run `:set -package ghc-heap' to expose it.
> (Note: this unloads all the modules in the current scope.)
> Use -v to see a list of the files searched for.
> |
> 23 | import GHC.Exts.Heap.InfoTableProf
> | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> make[1]: *** [libraries/ghc-heap/ghc.mk:4: libraries/ghc-heap/dist-install/build/GHC/Exts/Heap/Closures.p_o] Error 1
> make: *** [Makefile:127: all] Error 2
>
> For reference, here's my shell.nix:
>
> { nixpkgs ? import <nixpkgs> {}, compiler ? "ghcHEAD" }:
>
> let
> inherit (nixpkgs) pkgs;
> ghc = pkgs.haskell.packages.${compiler}.ghc;
> in
> with nixpkgs; lib.overrideDerivation ghc
> (drv: {
> name = "ghc-dev";
> nativeBuildInputs = drv.nativeBuildInputs ++ [
> arcanist
> git
> python36Packages.sphinx
> texlive.combined.scheme-basic
> ];
> })
>
> Any help would be appreciated.
>
> Thanks
> Sean G
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