Avoid using runghc when building the Debian package, as that needs ghci.

Makefile

@@ -4,7 +4,7 @@ all=git-annex $(mans) docs
 GHC?=ghc
 GHCMAKE=$(GHC) $(GHCFLAGS) --make
 PREFIX=/usr
-CABAL?=cabal # set to "runghc Setup.hs" if you lack a cabal program
+CABAL?=cabal # set to "./Setup" if you lack a cabal program
 
 # Am I typing :make in vim? Do a fast build.
 ifdef VIM
@@ -16,6 +16,7 @@ build-stamp: $(all)
 	touch $@
 
 Build/SysConfig.hs: configure.hs Build/TestConfig.hs Build/Configure.hs
+	if [ "$(CABAL)" = ./Setup ]; then ghc --make Setup; fi
 	$(CABAL) configure
 
 git-annex: Build/SysConfig.hs
@@ -71,7 +72,8 @@ docs: $(mans)
 
 clean:
 	rm -rf tmp dist git-annex $(mans) configure  *.tix .hpc \
-		doc/.ikiwiki html dist tags Build/SysConfig.hs build-stamp
+		doc/.ikiwiki html dist tags Build/SysConfig.hs build-stamp \
+		Setup.hi Setup.o Setup
 
 sdist: clean $(mans)
 	./Build/make-sdist.sh

debian/changelog

@@ -9,6 +9,7 @@ git-annex (4.20130406) UNRELEASED; urgency=low
   * Adjust preferred content expressions so that content in archive
     directories is preferred until it has reached an archive or smallarchive
     repository.
+  * Avoid using runghc when building the Debian package, as that needs ghci.
 
  -- Joey Hess <joeyh@debian.org>  Sat, 06 Apr 2013 15:24:15 -0400
 

debian/rules

@@ -1,7 +1,7 @@
 #!/usr/bin/make -f
 
 # Avoid using cabal, as it writes to $HOME
-export CABAL=runghc Setup.hs
+export CABAL=./Setup
 
 %:
 	dh $@