Add scripts to generate hscope db and tags

bin/mk-hscope.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+
+GHC_VERSION=8.8.3
+STREAMLY_VERSION=0.7.2
+
+case `uname` in
+  Darwin) SYSTEM=x86_64-osx;;
+  Linux) SYSTEM=x86_64-linux;;
+  *) echo "Unsupported system"; exit 1 ;;
+esac
+
+pushd $(git rev-parse --show-toplevel)
+git ls-files \
+  | grep '\.l\?hs$' \
+  | xargs hscope -b \
+    -I src/ \
+    -I test \
+    -I dist-newstyle/build/$SYSTEM/ghc-$GHC_VERSION/streamly-$STREAMLY_VERSION/build/src/ \
+    -X BangPatterns \
+    -X CApiFFI \
+    -X CPP \
+    -X ConstraintKinds \
+    -X DeriveDataTypeable \
+    -X DeriveGeneric \
+    -X DeriveTraversable \
+    -X ExistentialQuantification \
+    -X FlexibleContexts \
+    -X FlexibleInstances \
+    -X GeneralizedNewtypeDeriving \
+    -X InstanceSigs \
+    -X KindSignatures \
+    -X LambdaCase \
+    -X MagicHash \
+    -X MultiParamTypeClasses \
+    -X PatternSynonyms \
+    -X RankNTypes \
+    -X RecordWildCards \
+    -X ScopedTypeVariables \
+    -X TupleSections \
+    -X TypeFamilies \
+    -X ViewPatterns \
+    -X NoMonoLocalBinds \
+    -X TemplateHaskell \
+    -X UnboxedTuples \
+    -X UndecidableInstances
+popd

bin/mk-tags.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+HSCOPE_DIR=$HOME/.hscope
+CODEX_CONFIG=$HOME/.codex
+
+if test -e $CODEX_CONFIG
+then
+  echo "Please move or remove $CODEX_CONFIG and then run again"
+  exit 1
+fi
+
+# XXX it does not seem to include the current project anyway
+cat << EOF > $CODEX_CONFIG
+currentProjectIncluded: true
+hackagePath: $HSCOPE_DIR/packages/hackage.haskell.org/
+tagsFileHeader: true
+tagsFileName: tags
+tagsFileSorted: true
+tagsCmd: hasktags --ctags --follow-symlinks --output="\$TAGS" "\$SOURCES"
+EOF
+
+# XXX depends on cabal configure, does not seem to be supporting new cabal
+# XXX it depends in the hackage index tar file in ~/.cabal
+codex update --force
+rm -f $CODEX_CONFIG

streamly.cabal

@@ -118,6 +118,8 @@ extra-source-files:
     benchmark/lib/Streamly/Benchmark/*.hs
     benchmark/streamly-benchmarks.cabal
     bin/bench-exec-one.sh
+    bin/mk-hscope.sh
+    bin/mk-tags.sh
     cabal.project.ci
     charts-0/streamly-vs-list-time.svg
     configure