Handbook3-7-Ports: add an anchor for non-root port building

crux-wiki/Handbook3-7-Ports

@@ -85,72 +85,77 @@ The output reveals which files are downloaded, updated and deleted.
 !!! Listing Local Ports
 
 When the local ports structure has been updated the directory %fn%/usr/ports/%%
-will contain two package categories, %fn%core%% and %fn%opt%%. Under each of
+will contain at least two collections, %fn%core%% and %fn%opt%%. Under each of
 these directories you will find ports. You can simply browse around in the
 directory structure to find out which ports are available.
 
  $ cd /usr/ports/core/
  $ ls
 
- acl/			gperf/			openssh/
- attr/			grep/			openssl/
- autoconf/		groff/			patch/
- automake/		gzip/			pciutils/
- bash/			hdparm/			perl/
- bc/			httpup/			pkgconf/
- binutils/		iana-etc/		pkgutils/
- bison/			inetutils/		ports/
- bzip2/			iproute2/		procps/
- ca-certificates/	iptables/		prt-get/
- COPYING		kbd/			psmisc/
- COPYRIGHT		kmod/			python3/
- coreutils/		less/			rc/
- cpio/			libarchive/		rdate/
- curl/			libcap/			readline/
- dash/			libdevmapper/		rsync/
- db/			libffi/			sed/
- dcron/			libgmp/			shadow/
- dhcpcd/		libmpc/			signify/
- diffutils/		libmpfr/		sqlite3/
- e2fsprogs/		libnsl/			start-stop-daemon/
- ed/			libpcre/		sudo/
- elfutils/		libpipeline/		sysfsutils/
- eudev/			libtirpc/		sysklogd/
- exim/			libtool/		sysvinit/
- expat/			libusb/			tar/
- file/			linux-pam/		time/
- filesystem/		lzo/			tzdata/
- findutils/		m4/			usbutils/
- flex/			make/			util-linux/
- gawk/			man-db/			vim/
- gcc/			man-pages/		wget/
- gdbm/			mlocate/		which/
- gettext/		mpdecimal/		xz/
- glibc/			nasm/			zlib/
- glibc-32/		ncurses/		zstd/
+ acl/			httpup/			nftables/
+ attr/			iana-etc/		ninja/
+ autoconf/		inetutils/		openssh/
+ automake/		iproute2/		openssl/
+ bash/			iptables/		patch/
+ bc/			jansson/		pciutils/
+ binutils/		jsoncpp/		perl/
+ bison/			kbd/			pkgconf/
+ bzip2/			kmod/			pkgutils/
+ ca-certificates/	less/			ports/
+ cmake/			libarchive/		procps/
+ coreutils/		libcap/			prt-get/
+ cpio/			libdevmapper/		psmisc/
+ curl/			libedit/		python3/
+ dash/			libffi/			python3-setuptools/
+ db/			libgmp/			rc/
+ dcron/			libmnl/			rdate/
+ dhcpcd/		libmpc/			readline/
+ diffutils/		libmpfr/		rhash/
+ dumb_runtime_dir/	libnftnl/		rsync/
+ e2fsprogs/		libnghttp2/		sed/
+ ed/			libnsl/			shadow/
+ elfutils/		libpcre/		signify/
+ eudev/			libpcre2/		sqlite3/
+ exim/			libpipeline/		start-stop-daemon/
+ expat/			libtirpc/		sudo/
+ file/			libtool/		sysfsutils/
+ filesystem/		libusb/			sysklogd/
+ findutils/		libuv/			sysvinit/
+ flex/			linux-pam/		tar/
+ gawk/			lzlib/			time/
+ gcc/			lzo/			tzdata/
+ gdbm/			m4/			usbutils/
+ gettext/		make/			util-linux/
+ glibc/			man-db/			vim/
+ glibc-32/		man-pages/		which/
+ gperf/			meson/			xz/
+ grep/			mlocate/		zlib/
+ groff/			mpdecimal/		zstd/
+ gzip/			nasm/
+ hdparm/		ncurses/
 
 You can also use '''ports''' with the '''-l''' option to list all local ports. Example:
 
  $ ports -l
+ core/acl
+ core/attr
  core/autoconf
  core/automake
  core/bash
  core/bc
- core/bin86
- core/bindutils
- core/binutils
  ...
 
-If you are looking for a specific package, it might be easier to use this
-approach (e.g. @@ports -l | grep sendmail@@) to find out if the package is
-available and if so in which category it is located.
+If you are looking for a specific package, a command like @@ports -l | grep sendmail@@
+provides a straightforward way to find out if the package is available and if so
+in which collection it is located. More complicated searches (eg., based on
+footprint, description, or maintainer) can be performed using @@prt-get@@.
 
 !!! Listing Version Differences
 
 To find out if the ports structure carries ports that are different (likely
-newer) compared to the versions currently installed you can use the option
-'''-d'''. If version differences are found, the output from the above command
-could look something like this:
+newer) compared to the versions currently installed, you can use the option
+'''-d'''. If differences are found (in either 'version' or 'release'), the
+output from the above command could look something like this:
 
  $ ports -d
  Collection  Name     Port      Installed
@@ -173,7 +178,7 @@ the desired port directory and use '''pkgmk''' to build it. Example:
 
 The '''-d''' option means download missing source files and tells '''pkgmk''' to
 download the source(s) specified in the Pkgfile (in case the source is already
-downloaded this option is ignored). When the download is completed the package
+downloaded, this option is ignored). When the download is completed the package
 will be built. If the package was built successfully you can use '''pkgadd''' to
 install or upgrade it. Example:
 
@@ -191,6 +196,14 @@ or
 This will download, build and then install/upgrade the package. Note that the
 package will only be installed/upgraded if the build is successful.
 
+-> If you enable [[#NonRootBuilding | building ports as an unprivileged user]]
+and give that user write permissions on the directories for pkgmk {sources, work,
+packages}, the unprivileged user will be able to create a package but not to
+exercise the '''-i''' and '''-u''' options of '''pkgmk'''. There are forks of
+pkgmk that automatically invoke '''sudo''' or '''doas''' when performing the
+'''pkgadd''' step, but these forks are not part of the official CRUX utilities
+at this time.
+
 !!! Enabling the 'contrib' collection
 
 As previously mentioned, the 'contrib' collection contains useful ports of
@@ -246,7 +259,7 @@ As with 'contrib', run @@ports -u@@ and you're ready to use the ports from
 %fn%compat-32%%.
 
 !!! Additional tools
-!!!! Building ports as unprivileged user
+[[#NonRootBuilding]] !!!! Building ports as unprivileged user
 
 Building packages requires root privileges in order to create files with the
 correct owner and group. This is a security concern because a malicious or badly