On Sat, Nov 29, 2008 at 8:02 PM, John Meacham
On Sat, Nov 29, 2008 at 11:41:03PM +0100, Daniel Fischer wrote:
Great, nothing I don't already have, so download the source tarball, unpack and ./configure --prefix=$HOME checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes ... more configure output ... checking for drift-ghc... no configure: error: DrIFT not found get it from http://repetae.net/computer/haskell/DrIFT/
Huh? dafis@linux:~/jhc/jhc-0.5.20080307> which DrIFT /home/dafis/.cabal/bin/DrIFT dafis@linux:~/jhc/jhc-0.5.20080307> DrIFT --version Version DrIFT-2.2.3
Oh golly. I never put DrIFT on cabal, apparently whomever tried to cabalize it didn't include the ghc driver script, and also appeared to just drop the documentation from the package altogether. It is things like that that make it very hard to get behind cabal, why was DrIFT crippled just so it can be put on cabal? If cabal wasn't powerful enough to compile DrIFT, and we already had a perfectly good way of compiling it, why the need to shoehorn it in and cause this problem? sigh. ... John
Thought I'd mention that http://hackage.haskell.org/package/DrIFT-cabalized 2.2.3.1 includes a drift-ghc.hs (compiles to /home/gwern/bin/bin/DrIFT-cabalized-ghc) which is a clone of the drift-ghc.in shell script you allude to: import Data.List (isInfixOf) import System.Cmd (rawSystem) import System.Environment (getArgs) import System.Exit (ExitCode(ExitSuccess)) import Paths_DrIFT_cabalized (getBinDir) main :: IO ExitCode main = do args <- getArgs case args of (a:b:c:[]) -> conditional a b c _ -> error "This is a driver script allowing DrIFT to be used seamlessly with ghc.\n \ \ in order to use it, pass '-pgmF drift-ghc -F' to ghc when compiling your programs." conditional :: FilePath -> FilePath -> FilePath -> IO ExitCode conditional orgnl inf outf = do prefix <- getBinDir infile <- readFile inf if "{-!" `isInfixOf` infile then do putStrLn (prefix ++ "DriFT-cabalized " ++ inf ++ " -o " ++ outf) rawSystem inf ["-o", outf] else do writeFile outf ("{-# LINE 1 \"" ++ orgnl ++ " #-}") readFile inf >>= appendFile outf return ExitSuccess {- GHC docs say: "-pgmF cmd Use cmd as the pre-processor (with -F only). Use -pgmF cmd to select the program to use as the preprocessor. When invoked, the cmd pre-processor is given at least three arguments on its command-line: 1. the first argument is the name of the original source file, 2. the second is the name of the file holding the input 3. third is the name of the file where cmd should write its output to." -} John: I would appreciate you pointing out if I have made a mistake anywhere in that and not actually replicated the functionality of the shell script. (I think I have, but I didn't really understand what the first echo was supposed to do and just copied its functionality.) -- gwern