[resent after subscribing to the list] I'm working on a package that requires building a helper binary as part of its install process. This binary is written in C (with good reason), and on a Debian system would be installed into a path like /usr/lib/myproject/mybinary, because it's only used internally by the main program binary. My setup is up to this point:
gccProgram :: Program gccProgram = simpleProgram "gcc"
type BuildHook = PackageDescription -> LocalBuildInfo -> UserHooks -> BuildFlags -> IO () creplChildBuild :: BuildHook -> BuildHook creplChildBuild oldhook desc buildinfo hooks flags = do oldhook desc buildinfo hooks flags rawSystemProgramConf (buildVerbose flags) gccProgram (buildPrograms flags) ["child.c", "-o", buildDir buildinfo "child", "-ldl"]
buildHooks = simpleUserHooks { hookedPrograms = [gccProgram], buildHook = creplChildBuild (buildHook simpleUserHooks) }
main = defaultMainWithHooks buildHooks
However, it's unclear to me how to set up the install rule that would copy that binary into the appropriate place. Any tips? It seems I want to grab the "install" hook, but from there how do I specify where to install the file? There seem to be no helper functions to facilitate installing. (I appreciate that all of this is pretty new. So if it's not possible for me to do what I want, take it as an example of the sort of thing I'd like for Cabal to support...)