Revert "Merge pull request #11826 from DeterminateSystems/revert-11804"

This reverts commit aeffdeffc8, reversing
changes made to 723fdeb4f1.

src/libexpr-c/local.mk

@@ -1,25 +0,0 @@
-libraries += libexprc
-
-libexprc_NAME = libnixexprc
-
-libexprc_DIR := $(d)
-
-libexprc_SOURCES := \
-  $(wildcard $(d)/*.cc) \
-
-# Not just for this library itself, but also for downstream libraries using this library
-
-INCLUDE_libexprc := -I $(d)
-libexprc_CXXFLAGS += $(INCLUDE_libutil) $(INCLUDE_libutilc) \
-                     $(INCLUDE_libfetchers) \
-                     $(INCLUDE_libstore) $(INCLUDE_libstorec) \
-                     $(INCLUDE_libexpr) $(INCLUDE_libexprc)
-
-libexprc_LIBS = libutil libutilc libstore libstorec libfetchers libexpr
-
-libexprc_LDFLAGS += $(THREAD_LDFLAGS)
-
-$(eval $(call install-file-in, $(d)/nix-expr-c.pc, $(libdir)/pkgconfig, 0644))
-
-libexprc_FORCE_INSTALL := 1
-

src/libexpr-c/nix-expr-c.pc.in

@@ -1,10 +0,0 @@
-prefix=@prefix@
-libdir=@libdir@
-includedir=@includedir@
-
-Name: Nix
-Description: Nix Language Evaluator - C API
-Version: @PACKAGE_VERSION@
-Requires: nix-store-c
-Libs: -L${libdir} -lnixexprc
-Cflags: -I${includedir}/nix