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semantic/script/ghci-flags

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#!/bin/bash
# Computes the flags for ghcide to pass to ghci. You probably wont be running this yourself, but rather ghcide will via configuration in hie.yaml.
set -e
cd "$(dirname "$0")/.."
ghc_version="$(ghc --numeric-version)"
# recent hie-bios requires us to output to the file at $HIE_BIOS_OUTPUT, but older builds & script/repl dont set that var, so we default it to stdout
output_file="${HIE_BIOS_OUTPUT:-/dev/stdout}"
# do a build of dependencies up front to ensure theyre all available
cabal v2-build -v0 all --only-dependencies
build_products_dir="dist-newstyle/build/x86_64-osx/ghc-$ghc_version/build-repl"
function flags {
# disable optimizations for faster loading
echo "-O0"
# dont load .ghci files (for ghcide)
echo "-ignore-dot-ghci"
# where to put build products
echo "-outputdir $build_products_dir"
echo "-odir $build_products_dir"
echo "-hidir $build_products_dir"
echo "-stubdir $build_products_dir"
# preprocessor options, for -XCPP
echo "-optP-include"
echo "-optP$build_products_dir/autogen/cabal_macros.h"
# autogenerated sources, both .hs and .h (e.g. Foo_paths.hs)
echo "-i$build_products_dir/autogen"
echo "-I$build_products_dir/autogen"
# .hs source dirs
# TODO: would be nice to figure this out from cabal.project & the .cabal files
echo "-isemantic-analysis/src"
echo "-isemantic-ast/src"
echo "-isemantic-core/src"
echo "-isemantic-java/src"
echo "-isemantic-json/src"
echo "-isemantic-python/src"
echo "-isemantic-ruby/src"
echo "-isemantic-tags/src"
echo "-iapp"
echo "-isrc"
echo "-ibench"
echo "-itest"
# disable automatic selection of packages
echo "-hide-all-packages"
# run cabal and emit package flags from the environment file, removing comments & prefixing with -
cabal v2-exec -v0 bash -- -c 'cat "$GHC_ENVIRONMENT"' | grep -v '^--' | sed -e 's/^/-/'
# default language extensions
echo "-XHaskell2010"
echo "-XStrictData"
# treat warnings as warnings
echo "-Wwarn"
# default warning flags
echo "-Weverything"
echo "-Wno-all-missed-specialisations"
echo "-Wno-implicit-prelude"
echo "-Wno-missed-specialisations"
echo "-Wno-missing-import-lists"
echo "-Wno-missing-local-signatures"
echo "-Wno-monomorphism-restriction"
echo "-Wno-name-shadowing"
echo "-Wno-safe"
echo "-Wno-unsafe"
[[ "$ghc_version" = 8.6.* ]] || [[ "$ghc_version" = 8.8.* ]] && echo "-Wno-star-is-type" || true
[[ "$ghc_version" = 8.8.* ]] && echo "-Wno-missing-deriving-strategies" || true
}
flags > "$output_file"