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How do I get a stack build command to dump the GHC Core?
I've tried this, to no avail:
stack build :hello_world --ghc-options '-ddump-simpl'
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You can find these sandboxed GHC installations in the ghc-* directories in the stack path --programs directory. If you would like Stack to use your system GHC installation, use the --system-ghc flag or run stack config set system-ghc --global true to make Stack check your PATH for a suitable GHC by default.
stack-work directories local to each project. The Stack root directory holds packages belonging to snapshots and any Stack-installed versions of GHC. Stack will not tamper with any system version of GHC or interfere with packages installed by other build tools (such as Cabal (the tool)).
stack build --skip <component> skips building the specified components of a local package. It allows you to skip test suites and benchmark without specifying other components (e.g. stack test --skip long-test-suite will run the tests without the long-test-suite test suite).
Stack installs the Stackage libraries in ~/. stack and any project libraries or extra dependencies in a . stack-work directory within each project's directory.
Make sure to clean before, or force recompilation via the stack option --force-dirty and ghc option -fforce-recomp.
The files are dumped somewhere around .stack-work/dist/.../build/hello_world/hello_world-tmp/.
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