2010/1/16 Mark Lentczner
Indeed - all those look exactly like the same issue.
And the workaround: http://groups.google.com/group/happs/msg/1e7761d421b0e5eb
That doesn't fix the real issue: It causes happstack-data to not need the thing that is built wrong in syb-with-class. I believe my work-around (build syb-with-class w/o documentation) will be a more universal workaround, as at that point the syb-with-class install is no longer broken.
Here's the GHC bug report: http://hackage.haskell.org/trac/ghc/ticket/3799
Registration for that trac is broken, so I couldn't update that ticket. I see that you've added pointers to my post, thank you! Perhaps you can also add a note that the issue seems to have to do with something that cabal does differently when there is a documentation step enabled.
antoine-latters-macbook:syb-with-class-0.6.1 alatter$ find . | grep \\.o$ | xargs ls -l -rw-r--r-- 1 alatter staff 121496 Jan 16 20:04 ./dist/build/Data/Generics/SYB/WithClass/Basics.o -rw-r--r-- 1 alatter staff 5888 Jan 16 20:04 ./dist/build/Data/Generics/SYB/WithClass/Context.o -rw-r--r-- 1 alatter staff 157220 Jan 16 20:04 ./dist/build/Data/Generics/SYB/WithClass/Derive.o -rw-r--r-- 1 alatter staff 403216 Jan 16 20:04 ./dist/build/Data/Generics/SYB/WithClass/Instances.o -rw-r--r-- 1 alatter staff 602752 Jan 16 20:04 ./dist/build/HSsyb-with-class-0.6.1.o antoine-latters-macbook:syb-with-class-0.6.1 alatter$ find . | grep \\.hi$ | xargs ls -l -rw-r--r-- 1 alatter staff 33600 Jan 16 20:04 ./dist/build/Data/Generics/SYB/WithClass/Basics.hi -rw-r--r-- 1 alatter staff 2367 Jan 16 20:04 ./dist/build/Data/Generics/SYB/WithClass/Context.hi -rw-r--r-- 1 alatter staff 13960 Jan 16 20:04 ./dist/build/Data/Generics/SYB/WithClass/Derive.hi -rw-r--r-- 1 alatter staff 166039 Jan 16 20:04 ./dist/build/Data/Generics/SYB/WithClass/Instances.hi antoine-latters-macbook:syb-with-class-0.6.1 alatter$ cabal haddock Running Haddock for syb-with-class-0.6.1... Preprocessing library syb-with-class-0.6.1... Warning: The documentation for the following packages are not installed. No
Here's the good stuff. First, I did a "cabal configure && cabal build" for syb-with-class. And then: links will be generated to these packages: ffi-1.0, rts-1.0 Documentation created: dist/doc/html/syb-with-class/index.html antoine-latters-macbook:syb-with-class-0.6.1 alatter$ find . | grep \\.o$ | xargs ls -l -rw-r--r-- 1 alatter staff 121496 Jan 16 20:05 ./dist/build/Data/Generics/SYB/WithClass/Basics.o -rw-r--r-- 1 alatter staff 5896 Jan 16 20:05 ./dist/build/Data/Generics/SYB/WithClass/Context.o -rw-r--r-- 1 alatter staff 157220 Jan 16 20:05 ./dist/build/Data/Generics/SYB/WithClass/Derive.o -rw-r--r-- 1 alatter staff 403216 Jan 16 20:05 ./dist/build/Data/Generics/SYB/WithClass/Instances.o -rw-r--r-- 1 alatter staff 602752 Jan 16 20:04 ./dist/build/HSsyb-with-class-0.6.1.o antoine-latters-macbook:syb-with-class-0.6.1 alatter$ find . | grep \\.hi$ | xargs ls -l -rw-r--r-- 1 alatter staff 33600 Jan 16 20:05 ./dist/build/Data/Generics/SYB/WithClass/Basics.hi -rw-r--r-- 1 alatter staff 2367 Jan 16 20:05 ./dist/build/Data/Generics/SYB/WithClass/Context.hi -rw-r--r-- 1 alatter staff 13960 Jan 16 20:05 ./dist/build/Data/Generics/SYB/WithClass/Derive.hi -rw-r--r-- 1 alatter staff 166039 Jan 16 20:05 ./dist/build/Data/Generics/SYB/WithClass/Instances.hi <<<<< Note that after running "cabal haddock" we re-build all of our .hi and .o files EXCEPT ./dist/build/HSsyb-with-class-0.6.1.o And now, since TH generates random symbols, we have symbols in the new .hi files that aren't in the old (and only) HSsyb-with-class-0.6.1.o. Antoine