From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 122291 invoked by alias); 1 Jul 2016 22:40:30 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 122269 invoked by uid 89); 1 Jul 2016 22:40:27 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.2 required=5.0 tests=AWL,BAYES_40,KAM_LAZY_DOMAIN_SECURITY,RP_MATCHES_RCVD autolearn=ham version=3.3.2 spammy=fifth, Attached, H*c:MHil, indirectly X-HELO: etr-usa.com Received: from etr-usa.com (HELO etr-usa.com) (130.94.180.135) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 01 Jul 2016 22:40:26 +0000 Received: (qmail 48199 invoked by uid 13447); 1 Jul 2016 22:40:25 -0000 Received: from unknown (HELO polypore.west.etr-usa.com) ([73.26.17.49]) (envelope-sender ) by 130.94.180.135 (qmail-ldap-1.03) with AES256-SHA encrypted SMTP for ; 1 Jul 2016 22:40:25 -0000 From: Warren Young Content-Type: multipart/mixed; boundary="Apple-Mail=_F1491F0D-7E12-430C-B8AB-7307A2C432F0" Message-Id: <98C319EE-D0EF-48CD-85D7-3384DA5051A9@etr-usa.com> Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: Re: Anecdotal: Rebase and Visual Studio 2015 and /etc Date: Fri, 01 Jul 2016 22:40:00 -0000 References: <693uFCmXF1392S07.1467203045@web07.cms.usa.net> <3334CBDB-BF42-4CDA-83B5-CCA5B251A746@etr-usa.com> To: The Cygwin Mailing List In-Reply-To: <3334CBDB-BF42-4CDA-83B5-CCA5B251A746@etr-usa.com> X-IsSubscribed: yes X-SW-Source: 2016-07/txt/msg00023.txt.bz2 --Apple-Mail=_F1491F0D-7E12-430C-B8AB-7307A2C432F0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Content-length: 788 On Jul 1, 2016, at 1:35 PM, Warren Young wrote: >=20 > To clone an existing install using setup.exe: >=20 > $ /path/to/setup-x86_64 -R 'c:\cygwin-clone' -q -L \ > -P $(tail -n+2 installed.db | cut -f1 -d' ' | tr '\n' ,) [snip] > ...you can prune the long list produced by that $() construct way down I=E2=80=99ve written a script to do that automatically. (Attached.) It takes the raw list parsed from installed.db using the scheme above and a= copy of the setup.ini file downloaded by setup.exe and removes all =E2=80= =9Cnon-root=E2=80=9D packages, being those that will be installed indirectl= y by some other package on that list. It cut my largest local Cygwin installation=E2=80=99s package list down to = about a fifth the size spewed out by the command above. Enjoy! --Apple-Mail=_F1491F0D-7E12-430C-B8AB-7307A2C432F0 Content-Disposition: attachment; filename=find-cyg-roots Content-Type: application/octet-stream; name="find-cyg-roots" Content-Transfer-Encoding: 7bit Content-length: 3001 #!/usr/bin/perl use strict; use warnings; my $prgname = $0; #### parse_command_line ################################################ # Return a digested form of the command line arguments sub parse_command_line { my ($pn, $inifile) = @_; usage() unless defined($inifile); my @pkgnames = split ',', $pn; usage("no packages given") if @pkgnames == 0; usage("cannot read INI file") unless -r $inifile; return ($inifile, \@pkgnames); } #### parse_cygwin_setup_ini_file ####################################### # Extract dependency info from the Cygwin setup.ini file. sub parse_cygwin_setup_ini_file { my ($inifile, $piref) = @_; open my $ini, '<', $inifile or die "Cannot read INI file $inifile: $!\n"; # Skip to first package entry while (<$ini>) { last if /^@/; } # Parse package entries my %deps; while (defined $_) { chomp; my $p = substr $_, 2; my $obs = 0; while (<$ini>) { if (/^@/) { # Found next package entry; restart outer loop last; } elsif (/^category: Base$/) { # Mark this one as a special sort of root package: one # we're going to install regardless of user selection, # so we need not list it in our output. $piref->{$p} = 2; } elsif (/^category: _obsolete$/) { # Select this package's replacement instead below. $piref->{$p} = 0; $obs = 1; } elsif (/^requires:/) { # Save this package's requirements as its dependents list. my ($junk, @deps) = split; $deps{$p} = \@deps; # If this package was marked obsolete above, select its # replacement as provisionally to-be-installed. That # package still might end up removed from our output list # if it in turn is a dependent of one of the packages we # consider a "root" package at the end. $piref->{$deps[0]} = 1 if $obs; } } } close $ini; return \%deps; } #### usage ############################################################# # Print usage message plus optional error string, then exit sub usage { my ($error) = @_; print "ERROR: $error\n\n" if length($error); print <<"USAGE"; usage: $prgname packages ini-path packages is a comma-separated list of Cygwin package names, as produced by: \$ tail -n+2 /etc/setup/installed.db | cut -f1 -d' ' | tr '\\n' , ini-path is the path to a Cygwin setup.ini file. USAGE exit ($error ? 1 : 0); } #### main ############################################################## my ($inifile, $pkgnames) = parse_command_line(@ARGV); # Convert package list to a hash so we can mark them non-root by name my %packages = map { $_ => 1 } @$pkgnames; my $deps = parse_cygwin_setup_ini_file($inifile, \%packages); # For each given package name, mark any of its dependencies also found # on the command line as as non-root. for my $p (@$pkgnames) { my $pdref = $deps->{$p}; for my $d (@$pdref) { $packages{$d} = 0; } } # Collect list of root packages and print it out print join ',', sort(grep { $packages{$_} == 1 } @$pkgnames); --Apple-Mail=_F1491F0D-7E12-430C-B8AB-7307A2C432F0 Content-Type: text/plain; charset=us-ascii Content-length: 218 -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple --Apple-Mail=_F1491F0D-7E12-430C-B8AB-7307A2C432F0--