wrapper.in: Allow runtime ghc-pkgs to be a subset of compile-time ghc-pkgs

This still makes sure that ghc has been compiled with the same core
libraries as hls while it allows runtime environments where other
packages have been added to the ghc-pkg database.

This commit also adds that file to the sdist, so that distro
packagers can use it.

Author: maralorn

GNUmakefile

@@ -106,6 +106,7 @@ bindist-ghc:
 	$(SED) \
 		-e "s/@@EXE_NAME@@/haskell-language-server-$(GHC_VERSION)/" \
 		-e "s/@@GHC_VERSION@@/$(GHC_VERSION)/" \
+		-e "s/@@PKG_LIST@@/$(shell ghc-pkg-$(GHC_VERSION) --global list --simple-output)/" \
 		-e "s/@@ABI_HASHES@@/$(shell for dep in `ghc-pkg-$(GHC_VERSION) --global list --simple-output` ; do printf "%s:" "$$dep" && ghc-pkg-$(GHC_VERSION) field $$dep abi --simple-output ; done | tr '\n' ' ' | xargs)/" \
 		bindist/wrapper.in > "$(BINDIST_OUT_DIR)/haskell-language-server-$(GHC_VERSION).in"
 	$(CHMOD_X) "$(BINDIST_OUT_DIR)/haskell-language-server-$(GHC_VERSION).in"

bindist/wrapper.in

@@ -3,6 +3,7 @@
 exedir="@@EXE_DIR@@"
 executablename="@@EXE_NAME@@"
 GHC_VERSION="@@GHC_VERSION@@"
+PKG_LIST="@@PKG_LIST@@"
 ABI_HASHES="@@ABI_HASHES@@"
 
 debug_msg() {
@@ -73,7 +74,7 @@ check_ghc() {
 			return 1
 		fi
 		PKGCONF="${check_ghc_libdir}/package.conf.d"
-		MY_ABI_HASHES="$(for dep in $("${GHC_PKG}" --global --global-package-db "$PKGCONF" list --simple-output) ; do printf "%s:" "${dep}" && "${GHC_PKG}" --global --global-package-db "$PKGCONF" field "${dep}" abi --simple-output ; done | tr '\n' ' ' | xargs)"
+		MY_ABI_HASHES="$(for dep in ${PKG_LIST} ; do printf "%s:" "${dep}" && "${GHC_PKG}" --global --global-package-db "$PKGCONF" field "${dep}" abi --simple-output ; done | tr '\n' ' ' | xargs)"
 		if [ "${ABI_HASHES}" != "${MY_ABI_HASHES}" ] ; then
 			err_abi "${MY_ABI_HASHES}"
 			return 3

haskell-language-server.cabal

@@ -22,6 +22,7 @@ extra-source-files:
   test/testdata/**/*.cabal
   test/testdata/**/*.yaml
   test/testdata/**/*.hs
+  bindist/wrapper.in
 
 flag pedantic
   description: Enable -Werror