ghci-flags

#!/usr/bin/env bash
# Computes the flags for ghcide to pass to ghci. You probably won’t be running this yourself, but rather script/repl will.

set -e

cd "$(dirname "$0")/.."

ghc_version="$(ghc --numeric-version)"

build_dir="dist-newstyle/build/x86_64-osx/ghc-$ghc_version"
build_products_dir="$build_dir/build-repl"

function add_autogen_includes {
    echo "-optP-include"
    echo "-optP$1/cabal_macros.h"
    # autogenerated files, .h and .hs
    echo "-i$1"
    echo "-I$1"
}

cores=$(sysctl -n machdep.cpu.core_count || echo 4)

# disable optimizations for faster loading
echo "-O0"
# don’t load .ghci files (for ghcide)
echo "-ignore-dot-ghci"

# use as many jobs as there are physical cores
echo "-j$cores"

# 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"

if [ -d "$build_dir/semantic-0.11.0.0/build/autogen" ]
then add_autogen_includes "$build_dir/semantic-0.11.0.0/build/autogen"
elif [ -d "$build_dir/semantic-0.11.0.0/noopt/build/autogen" ]
then add_autogen_includes "$build_dir/semantic-0.11.0.0/noopt/build/autogen"
fi

echo "-optP-Wno-macro-redefined"

echo "-DBAZEL_BUILD=0"

# .hs source dirs
# TODO: would be nice to figure this out from cabal.project & the .cabal files
echo "-isemantic/app"
echo "-isemantic/src"
echo "-isemantic/bench"
echo "-isemantic/test"
echo "-isemantic-analysis/src"
echo "-isemantic-ast/src"
echo "-isemantic-codeql/src"
echo "-isemantic-codeql/test"
echo "-isemantic-go/src"
echo "-isemantic-java/src"
echo "-isemantic-json/src"
echo "-isemantic-json/test"
echo "-isemantic-parse/src"
echo "-isemantic-php/src"
echo "-isemantic-proto/src"
echo "-isemantic-python/src"
echo "-isemantic-python/test"
echo "-isemantic-ruby/src"
echo "-isemantic-rust/src"
echo "-isemantic-scope-graph/src"
echo "-isemantic-tsx/src"
echo "-isemantic-typescript/src"
echo "-isemantic-tags/src"

# disable automatic selection of packages
echo "-hide-all-packages"
echo "-package proto-lens-jsonpb"

# 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.* ]] || [[ "$ghc_version" = 8.10.* ]] && echo "-Wno-star-is-type" || true
[[ "$ghc_version" = 8.8.* ]] || [[ "$ghc_version" = 8.10.* ]] && echo "-Wno-missing-deriving-strategies" || true
[[ "$ghc_version" = 8.10.* ]] && echo "-Wno-missing-safe-haskell-mode" && echo "-Wno-prepositive-qualified-module" && echo "-Wno-unused-packages"