Bug#495431: Bogus missing-dep-for-interpreter errors with ocamlrun

[Stephane Glondu <steph@glondu.net>]

Package: lintian
Version: 1.24.3
Severity: normal
Tags: patch

Hi,

Lintian reports missing-dep-for-interpreter for many OCaml-related packages:

  http://lintian.debian.org/tags/missing-dep-for-interpreter.html

This is because packages that need ocamlrun usually depend on a
virtual package providing it (embedding the ABI version in its name).
I've thought of several ways to fix this:

 1. Take into account virtual packages in Dep::implies
 2. Allow usage of regular expressions for dependencies in %interpreters
 3. Add special case for ocamlrun before issuing missing-dep-for-interpreter

Attached is a patch implementing solution 3.


Cheers,

-- 
Stephane Glondu

-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.25-2-686-bigmem (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages lintian depends on:
ii  binutils            2.18.1~cvs20080103-7 The GNU assembler, linker and bina
ii  diffstat            1.45-2               produces graph of changes introduc
ii  dpkg-dev            1.14.20              Debian package development tools
ii  file                4.25-1               Determines file type using "magic"
ii  gettext             0.17-3               GNU Internationalization utilities
ii  intltool-debian     0.35.0+20060710.1    Help i18n of RFC822 compliant conf
ii  libdigest-sha-perl  5.47-1               Perl extension for SHA-1/224/256/3
ii  libparse-debianchan 1.1.1-2              parse Debian changelogs and output
ii  libtimedate-perl    1.1600-9             Time and date functions for Perl
ii  liburi-perl         1.35.dfsg.1-1        Manipulates and accesses URI strin
ii  man-db              2.5.2-2              on-line manual pager
ii  perl [libdigest-sha 5.10.0-11.1          Larry Wall's Practical Extraction 

lintian recommends no packages.

Versions of packages lintian suggests:
pn  binutils-multiarch            <none>     (no description available)
pn  libtext-template-perl         <none>     (no description available)
ii  man-db                        2.5.2-2    on-line manual pager

-- no debconf information

diff --git a/checks/scripts b/checks/scripts
index e54ec62..40238c9 100644
--- a/checks/scripts
+++ b/checks/scripts
@@ -336,6 +336,8 @@ for my $filename (sort keys %{$info->scripts}) {
 		# Initialization files for csh.
 	    } elsif ($base eq 'fish' && $filename =~ m,^./etc/fish.d/,) {
 		# Initialization files for fish.
+	    } elsif ($base eq 'ocamlrun' && Dep::unparse($deps{all}) =~ /\Wocaml(-base)?(-nox)?-\d\.[\d.]+/) {
+		# ABI-versioned virtual packages for ocaml
 	    } else {
 		tag('missing-dep-for-interpreter', "$base => $depends",
 		    "($filename)");