All,
I tried Alfredo's suggestion of building with the stage1 compiler.
(Sticking with the bootstrap compiler for HLS support, which seems
to be working OK.) I've gotten a bit further.
I have a small app that loads .hs files, translates to STG,
and dumps the results. It also dumps the `ModSummary` for each
module in the graph.
The code worked in the 9.0 API, but using the 9.3 API causes a panic:
nr@homedog ~/a/sandbox> cabal v1-build
Resolving dependencies...
Configuring sandbox-0.1.0.0...
Preprocessing executable 'sandbox' for sandbox-0.1.0.0..
Building executable 'sandbox' for sandbox-0.1.0.0..
[1 of 1] Compiling Main ( app/Main.hs,
dist/build/sandbox/sandbox-tmp/Main.o ) [Source file changed]
Linking dist/build/sandbox/sandbox ...
nr@homedog ~/a/sandbox> ./dist/build/sandbox/sandbox programs/Church.hs
libdir == /home/nr/asterius/ghc/_build/stage1/lib
ModSummary {
ms_hs_hash = 8ed607a72dd3968f1e65123b865b8572
ms_mod = Church,
ms_textual_imps = [(Nothing, Prelude)]
ms_srcimps = []
}
..............
sandbox: panic! (the 'impossible' happened)
GHC version 9.3.20210918:
unsafeGetHomeUnit: No home unit
Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug
I poked around, but I expected the home unit to be set by
`setSessionDynFlags`, and I don't know why it isn't.
Everything needed to reproduce the problem can be found (I hope!) at
https://github.com/nrnrnr/ghc-api-sandbox
I'm a bit reluctant to simply report a bug as I'm afraid I might be
doing something wacky.
What should I look at next?
Norman
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