<br><font size=2 face="sans-serif">this works. now if only there were a
"quiet" option for ghci...</font>
<br>
<br><font size=2 face="sans-serif">well, for me, I guess this may be goodbye
to poor sad undocumented malfunctioning runghc..</font>
<br>
<br><font size=2 face="sans-serif">hartthoma@linuxpt:~/personal/PersonalRepos/pharchive/learning/haskell/UnixTools/arghandling>echo
":main 1 2 3" | /usr/local/bin/ghci-6.6.1 arghandling-nice.hs</font>
<br><font size=2 face="sans-serif"> ___
___ _</font>
<br><font size=2 face="sans-serif"> / _ \ /\ /\/ __(_)</font>
<br><font size=2 face="sans-serif"> / /_\// /_/ / / | |
GHC Interactive, version 6.6.1, for Haskell 98.</font>
<br><font size=2 face="sans-serif">/ /_\\/ __ / /___| |
http://www.haskell.org/ghc/</font>
<br><font size=2 face="sans-serif">\____/\/ /_/\____/|_|
Type :? for help.</font>
<br>
<br><font size=2 face="sans-serif">Loading package base ... linking ...
done.</font>
<br><font size=2 face="sans-serif">[1 of 1] Compiling Main
( arghandling-nice.hs, interpreted )</font>
<br><font size=2 face="sans-serif">Ok, modules loaded: Main.</font>
<br><font size=2 face="sans-serif">*Main> Loading package haskell98
... linking ... done.</font>
<br><font size=2 face="sans-serif">"1 2 3"</font>
<br><font size=2 face="sans-serif">*Main> Leaving GHCi.</font>
<br>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>Thomas Hartman <thomas.hartman+external@db.com></b>
</font>
<br><font size=1 face="sans-serif">Sent by: haskell-cafe-bounces@haskell.org</font>
<p><font size=1 face="sans-serif">08/22/2007 01:38 PM</font>
<td width=59%>
<table width=100%>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">"haskell-cafe@haskell.org"
<haskell-cafe@haskell.org></font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[Haskell-cafe] -f flag to runghc broken,
or is it just me? (because trying switch elegantly between ghc 6.6 and
ghc 6.7)</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=2 face="sans-serif"><br>
I'm doing a lot of switching between ghc 6.6 and ghc 6.7 on the same computer.
I install modules using</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
$ runghc Setup.hs configure <br>
etc.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
I would like to specify which version of ghc should be getting the package
installed via the f flag to runghc</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
$ :~/personal/PersonalRepos/pharchive/learning/haskell/UnixTools/arghandling>runghc</font><font size=3>
</font><font size=2 face="sans-serif"><br>
runghc: syntax: runghc [-f GHCPATH] [GHC-ARGS] FILE ARG...</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
but this appears to be broken.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
$ :~/personal/PersonalRepos/pharchive/learning/haskell/UnixTools/arghandling>runghc
arghandling-nice.hs</font><font size=3> </font><font size=2 face="sans-serif"><br>
arghandling-nice.hs: args length does not equal 3. args: : []</font><font size=3>
</font><font size=2 face="sans-serif"><br>
usage example: $ runghc arghandling-nice.hs firstarg secondarg thirdarg</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
without the flag works but </font><font size=3><br>
</font><font size=2 face="sans-serif"><br>
$ :~/personal/PersonalRepos/pharchive/learning/haskell/UnixTools/arghandling>runghc
-f /usr/local/bin/ghc-6.6.1 arghandling-nice.hs</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
does nothing.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
$ :~/personal/PersonalRepos/pharchive/learning/haskell/UnixTools/arghandling>ls
-l /usr/local/bin/ghc-6.6.1</font><font size=3> </font><font size=2 face="sans-serif"><br>
-rwxr-xr-x 1 root root 151 2007-06-16 20:22 /usr/local/bin/ghc-6.6.1</font><font size=3>
<br>
</font><font size=2 face="sans-serif"><br>
In general I don't like using runghc because it doesn't appear to be documented
anywhere except that (incorrect?) usage message. Is there a way to do a
package install just using ghc -e? (Sure I could compile, but it helps
me sometimes if I can not, a la runghc.) At any rate I couldn't figure
out how to pass arguments to main via ghc -e.</font><font size=3> <br>
<br>
<br>
</font><font size=2 face="sans-serif"><br>
$ :~/personal/PersonalRepos/pharchive/learning/haskell/UnixTools/arghandling>cat
arghandling-nice.hs</font><font size=3> </font><font size=2 face="sans-serif"><br>
import System</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
main = do args <- getArgs</font><font size=3> </font><font size=2 face="sans-serif"><br>
let usagemsg = "usage example:
$ runghc arghandling-nice.hs firstarg secondarg thirdarg"</font><font size=3>
</font><font size=2 face="sans-serif"><br>
case args of</font><font size=3> </font><font size=2 face="sans-serif"><br>
[first,second,third] -> process
first second third</font><font size=3> </font><font size=2 face="sans-serif"><br>
_
-> error $ "args length
does not equal 3. args: : " ++ ( show args ) ++ "\n" ++
usagemsg</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
process a b c = print $ unwords [a,b,c]</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Thanks for anybody who can help me out with this.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Thomas.</font><font size=3> </font><font size=2 face="sans-serif"><br>
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