chore(build): Pass build time lua package path to Rust runtime

.cargo/config.toml

@@ -4,11 +4,9 @@ rustflags = ["-C", "link-args=-rdynamic"]
 [target.x86_64-unknown-linux-gnu]
 rustflags = ["-C", "link-args=-rdynamic"]
 
-# Since autotools sets this and we are *not* forcing it here, this will not
+# Since autotools sets these and we are *not* forcing them here, this will not
 # affect release builds. It will affect `cargo run` and make it easier to test
 # locally since the Lua loader path will be relative to the current sources.
-# For debug builds it is assumed you configured `--without-system-luarocks`,
-# this convenience won't enable you to use system packages in debug builds.
 [env]
 SILE_PATH = { value = "", relative = true }
 

Makefile-luarocks

@@ -17,7 +17,7 @@ $(LUAMODLOCK): lua_modules $(LUAMODSPEC)
 	$(genrockslock) > $@
 else
 LUAMODLOCK :=
-LUA_PATH := $(shell lua$(LUA_VERSION) -e 'print(package.path)')
-LUA_CPATH := $(shell lua$(LUA_VERSION) -e 'print(package.cpath)')
+LUA_PATH := $(shell $(LUA) -e 'print(package.path)')
+LUA_CPATH := $(shell $(LUA) -e 'print(package.cpath)')
 export LUA_PATH LUA_CPATH
 endif

configure.ac

@@ -309,12 +309,19 @@ AX_SUBST_TRANSFORMED_PACKAGE_NAME
 # tests/manual build when developer mode is enabled
 AM_COND_IF([DEVELOPER], [
         adl_RECURSIVE_EVAL(["$(pwd)"], [SILE_PATH])
+        AC_DEFINE_UNQUOTED([SILE_PATH], ["${SILE_PATH}"], [Path for SILE packages and classes])
+        adl_RECURSIVE_EVAL(["$(${LUA} -e 'print(package.path)')"], [LUA_PATH])
+        AC_DEFINE_UNQUOTED([LUA_PATH], ["${LUA_PATH}"],[System Lua package path])
+        adl_RECURSIVE_EVAL(["$(${LUA} -e 'print(package.cpath)')"], [LUA_CPATH])
+        AC_DEFINE_UNQUOTED([LUA_CPATH], ["${LUA_CPATH}"], [System Lua package cpath])
     ],[
         adl_RECURSIVE_EVAL(["${datadir}/${TRANSFORMED_PACKAGE_NAME}"], [SILE_PATH])
         AC_DEFINE_UNQUOTED([SILE_PATH], ["${SILE_PATH}"], [Path for SILE packages and classes])
 ])
 
 AC_SUBST([SILE_PATH])
+AC_SUBST([LUA_PATH])
+AC_SUBST([LUA_CPATH])
 
 adl_RECURSIVE_EVAL(["${libdir}/${TRANSFORMED_PACKAGE_NAME}"], [SILE_LIB_PATH])
 AC_DEFINE_UNQUOTED([SILE_LIB_PATH],["${SILE_LIB_PATH}"], [Path for SILE libraries])

core/pathsetup.lua.in

@@ -1,3 +1,9 @@
+-- Allow autoconf to setup system lua paths at compile time, not run time (only used in developer mode)
+if "@LUA_PATH@" ~= "" then
+  package.path = "@LUA_PATH@"
+  package.cpath = "@LUA_CPATH@"
+end
+
 local executable = debug.getinfo(3, "S").source
 local luaversion = _VERSION:match("%d+%.%d+")