> Is there in Cygwin a command to recover a list of installed packages chosen by
> the user without the dependencies?
>
> For example, the archlinux package manager with
>
> pacman -Qqe > pkglist
> can save the list of package chosen by the user only and this is useful in
> case
> one wants/needs to reinstall all the packages.
Hi Angelo,
I replied to your entry in an earlier attempt, but my reply got stuck in the
machinery
at sourceware.org (my message had a shell script and a .bat file attached).
Below (I hope) you will find a script, that may be of help to you ...
It computes the "top vertices" of the forest (i.e. the dependency graph), i.e.
the pkgs
that no other pkg depends on (within the context of a specific installation of
Cygwin).
In my case, it reduced a list of 161 pkgs to one of only (about) 15 pkgs.
(using a .bat file - quiet-install.bat - which I will attempt to include as
well, I
installed Cygwin afresh and verified the result)
Of course your situation may be different from mine ... then somebody else may
find good
use of the script.
Henri
top-sters-sh:
#!/bin/bash
# compute the top vertices of the forest (the dependency graph), i.e. the
packages that no other package depends on.
case $(uname -s) in
*WOW64)
setup_ini='/drv/e/_cygwin_repository/http%3a%2f%2fftp.snt.utwente.nl%2fpub%2fsoftware%2fcygwin%2f/x86/setup.ini'
;;
*)
setup_ini='/drv/e/_cygwin64_repository/http%3a%2f%2fftp.snt.utwente.nl%2fpub%2fsoftware%2fcygwin%2f/x86_64/setup.ini'
;;
esac
( awk '
NR == 1 { next }
{
if ($1 ~ /-debuginfo/) next # skip -debuginfo packages
printf "%s\n", $1
}' /etc/setup/installed.db
# each 'requires: line' WILL be preceeded by a corresponding '@ <package>' line
awk '
/^@ / { left = $2; next }
/^requires: / \
{
if (left ~ /-debuginfo$/) next # skip the -debuginfo pkgs (irrelevant
pkgs for regular users)
printf "%s", left
for (i = 2; i <= NF; ++i) {
if ($i ~ /-debuginfo$/) continue # skip any -debuginfo pkg (never
reached)
printf " %s", $i
}
printf "\n"
} ' $setup_ini ) | sort | \
awk '
# pkg1 <==== must be printed (even in case the following line is missing)
# pkg1 pkg2 ...
BEGIN { pkg = "" }
NF == 1 {
if (pkg != "") { # pkg wo dependencies
printf "%s\n", pkg
}
pkg = $1
next
}
NF > 1 {
if (pkg == "") next
if ($1 == pkg) {
printf "%s\n", $0
} else { # pkg wo dependencies
printf "%s\n", pkg
}
pkg = ""
} ' | \
awk '
# pkg1 [ pkg2 ... ]
{
for (j = 1; j <= NF; j++) {
# keep count of number of pkgs that depend on a pkg (for each pkg)
if ($j in ary) {
ary[$j]++
} else {
ary[$j] = 0
}
}
}
END {
for (elm in ary) {
if (ary[elm] == 0) {
printf "%s\n", elm
}
}
} ' | sort # sort, as arrays are indexed by string values in awk
exit # <==== !!!!!
# each 'requires: line' WILL be preceeded by a corresponding '@ <package>' line
awk '
/^@ / { left = $2; next }
/^requires: / \
{
if (left ~ /-debuginfo$/) next # skip the -debuginfo pkgs (irrelevant
pkgs for regular users)
if ($0 ~ /-debuginfo/) { # test: none of the regular packages should
depend on a -debuginfo pkg
printf "%s %s\n", left, $0
}
} ' $setup_ini
#=====
quiet-install.bat:
@echo off
e:/_cygwin64_repository/setup-x86_64 -q -L -n -N -d -M -A -a x86_64 -R
e:/Cygwin64 -l e:/_cygwin64_repository -P ^
base-files,^
<pkg>,^
...
<last-pkg>
::=====
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