--- a/Makefile.in	2016-09-13 01:23:59.000000000 -0700
+++ b/Makefile.in	2017-02-22 10:26:31.824509512 -0800
@@ -1475,7 +1475,7 @@
 gir_DATA = $(STATIC_GIRSOURCES) $(SUBSTITUTED_GIRSOURCES) $(BUILT_GIRSOURCES)
 typelibsdir = $(libdir)/girepository-1.0
 typelibs_DATA = $(gir_DATA:.gir=.typelib)
-TOOL_SUBSTITUTIONS = -e s,@libdir\@,$(libdir), -e s,@datarootdir\@,$(datarootdir), -e s,@PYTHON\@,$(PYTHON),
+TOOL_SUBSTITUTIONS = -e s,@libdir\@,$(libdir), -e s,@datarootdir\@,$(datarootdir), -e s,@PYTHON\@,$(PYTHON), -e "1i\#!/bin/bash $(SPACK_SBANG)"
 g_ir_compiler_SOURCES = tools/compiler.c
 g_ir_compiler_CPPFLAGS = -DGIREPO_DEFAULT_SEARCH_PATH="\"$(libdir)\"" \
 			 -I$(top_srcdir)/girepository