Keep N last package metadata

.gitignore

@@ -1 +1,2 @@
 *.tmp
+*~

files/post-functions.sh

@@ -351,3 +351,51 @@ boot the appropriate kernel (after generating an initrd if required)."
 		fi
 	fi
 }
+
+lookoldpkgfiles() {
+	local PKGHISTORYLST PKGFILE CLEANLIST
+
+	if [ -n "${KEEP_N_LAST_PKG_METADATA}" ] && [ ${KEEP_N_LAST_PKG_METADATA} -gt 0 ]; then
+		echo -ne "Keep only the last ${KEEP_N_LAST_PKG_METADATA} package metadata versions... "
+		PKGHISTORYLIST=${TMPDIR}/pkghistory.lst
+		if [ -d /var/lib/pkgtools/removed_packages/ ]; then
+			PKGTOOLSDIR=/var/lib/pkgtools
+		else
+			PKGTOOLSDIR=/var/log
+		fi
+		# This could be simpler if we used the file timestamp to sort
+		# the list. But the timestamp at filename is safer to warranty
+		# the correct ordering.
+		ls -1 ${PKGTOOLSDIR}/removed_packages | awk '
+			/-upgraded-/ {
+				INPUT=$NF
+				fs=FS
+				FS="/" ; OFS="/"
+				$0=INPUT
+				FULLPACK=$NF
+				FS="-" ; OFS="-"
+				$0=FULLPACK
+				if ( NF > 3 ) {
+					DAYHOUR=$NF
+					MONTH=$(NF-1)
+					YEAR=$(NF-2)
+					NF=NF-7
+					NAME=$0
+				}
+				FS=fs
+				print YEAR"-"MONTH"-"DAYHOUR" "NAME" "FULLPACK
+			}' | sort -rn | awk '
+			{
+				COUNT[$2]+=1
+				if ( COUNT[$2] > '${KEEP_N_LAST_PKG_METADATA}' ) {
+					print $NF
+				}
+			}' > ${PKGHISTORYLIST}
+		for PKGFILE in $(cat ${PKGHISTORYLIST}); do
+			# Not all packages have scripts in the removed_scripts
+			# directory.
+			rm ${PKGTOOLSDIR}/removed_{packages,scripts}/$PKGFILE 2>/dev/null
+		done
+		echo "OK"
+	fi
+}

files/slackpkg

@@ -607,6 +607,7 @@ for i in check-updates remove search file-search update info blacklist \
 done
 
 if [ "$POSTINST" != "off" ]; then
+	lookoldpkgfiles
 	lookkernel
 	looknew
 fi

files/slackpkg.conf.5

@@ -1,4 +1,4 @@
-.TH SLACKPKG.CONF 5 "March 2021" slackpkg-15.0.1 ""
+.TH SLACKPKG.CONF 5 "June 2022" slackpkg-15.0.10 ""
 .SH NAME
 .B slackpkg.conf
 \- Configuration data for slackpkg
@@ -98,6 +98,22 @@ The default value of
 .B WORKDIR 
 is /var/lib/slackpkg.
 
+.TP 5
+.B DOWNLOADER
+.br
+Selects the download application slackpkg will use to fetch files.
+Current options are "curl" or "wget".
+
+The default value of
+.B DOWNLOADER
+is "wget"
+
+.TP 5
+.B CURLFLAGS
+.br
+Selects special options for curl. If you need to use multiple options,
+remember to put them between double quotes.
+
 .TP 5
 .B WGETFLAGS
 .br
@@ -344,6 +360,13 @@ is "on".
 .br
 From command line, you can use -spinning=value.
 
+.TP 5
+.B KEEP_N_LAST_PKG_METADATA
+.br
+When a package is upgraded, its old installation scripts and list of files
+are kept under /var/lib/pkgtools. This variable sets how many of these
+previous lists and scripts should be kept.
+
 .SH FILES
 .TP 5
 .B /etc/slackpkg/slacpkg.conf

files/slackpkg.conf.new

@@ -70,6 +70,12 @@ TEMP=/var/cache/packages
 # Package lists, file lists, and others will be stored in WORKDIR:
 WORKDIR=/var/lib/slackpkg
 
+# Use curl or wget for downloading (wget is default)
+DOWNLOADER=wget
+
+# Special options for curl
+#CURLFLAGS=
+
 # Special options for wget (default is WGETFLAGS="--passive-ftp")
 WGETFLAGS="--passive-ftp"
 
@@ -150,6 +156,11 @@ SPINNING=on
 # Slackware 10.2)
 DIALOG_MAXARGS=139000
 
+# When a package is upgraded, its old installation scripts and list of files
+# are kept under /var/lib/pkgtools. This variable sets how many of these
+# previous lists and scripts should be kept.
+#KEEP_N_LAST_PKG_METADATA=3
+
 #
 # The MIRROR is set from /etc/slackpkg/mirrors
 # You only need to uncomment the selected mirror.