Build a shebanged executable instead of a binary.

This makes the build itself a lot more portable. The executable of
course relies on lua being installed on the machine, but this will
nearly always be the case for a program used by Fennel developers.

Bonus: removes the direct use of the fennel.utils module which was
only used for the table? function and was causing a warning.

Makefile

@@ -1,5 +1,3 @@
-LUA_LIB=/usr/lib/liblua.so.5.4
-LUA_INCLUDE_DIR=/usr/include/lua5.4
 FENNEL=./fennel
 EXE=fennel-ls
 
@@ -11,10 +9,13 @@ SRC+=$(wildcard src/fennel-ls/*.fnl)
 all: $(EXE)
 
 $(EXE): $(SRC)
-	LUA_PATH="./src/?.lua;./src/?/init.lua" FENNEL_PATH="./src/?.fnl;./src/?/init.fnl" $(FENNEL) --compile-binary src/fennel-ls.fnl fennel-ls $(LUA_LIB) $(LUA_INCLUDE_DIR)
+	echo "#!/usr/bin/env lua" > $@
+	LUA_PATH="./src/?.lua;./src/?/init.lua" FENNEL_PATH="./src/?.fnl;./src/?/init.fnl" \
+		$(FENNEL) --require-as-include --compile src/fennel-ls.fnl >> $@
+	chmod 755 $@
 
 clean:
-	rm -f fennel-ls
+	rm -f $(EXE)
 
 test:
 	# requires busted to be installed

src/fennel-ls/language.fnl

@@ -2,8 +2,7 @@
 The high level analysis system that does deep searches following
 the data provided by compiler.fnl."
 
-(local {: sym? : list? : sequence? : sym : view} (require :fennel))
-(local {: table?} (require :fennel.utils))
+(local {: sym? : list? : sequence? : varg? : sym : view} (require :fennel))
 (local utils (require :fennel-ls.utils))
 (local state (require :fennel-ls.state))
 
@@ -147,7 +146,7 @@ the data provided by compiler.fnl."
                        &until result]
             (if (contains? child byte)
               (recurse child byte)))
-          (table? ast)
+          (and (not (sym? ast)) (not (varg? ast)))
           (accumulate [(result done) nil
                        key value (pairs ast)
                        &until done]