ArchLinux: pacman hook (to see the description)
linux arch pacman hook
Written on November 8, 2020
BTW, I use arch. Here are 2 small snippets to hook pacman to provide the description of packages updated/removed (installed too).
It helps me check the description of the packages just updated, and gives a hint about why it is here.
Update or delete
/etc/pacman.d/hooks/ description-install.hook
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# Display description of packages installed / upgraded / removed
[Trigger]
Operation = Install
Type = Package
Target = *
[Action]
# for xargs:
Depends = findutils
Depends = expac
Description = HOOK : Display full description of packages (install)
When = PreTransaction
# provide target name on stdin:
NeedsTargets
Exec = /usr/bin/xargs expac -S " | %-10n: %d"
Update or delete
/etc/pacman.d/hooks/ description-update-remove.hook
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# Display description of packages installed / upgraded / removed
[Trigger]
Operation = Upgrade
Operation = Remove
Type = Package
Target = *
[Action]
# for xargs:
Depends = findutils
Depends = expac
Description = HOOK : Display full description of packages (update/remove)
When = PreTransaction
# provide target name on stdin:
NeedsTargets
Exec = /usr/bin/xargs expac -Q " | %-10n: %d"
Result!
Looking for conflicting packages...
Package (8) Old Version New Version Net Change Download Size
community/gdu 5.17.0-1 5.17.1-1 0.00 MiB 3.09 MiB
extra/libgusb 0.3.10-2 0.4.0-1 0.05 MiB 0.08 MiB
community/libharu 2.4.1-1 2.4.2-1 0.00 MiB 0.56 MiB
community/libluv 1.44.2_0-1 1.44.2_1-1 0.00 MiB 0.05 MiB
community/lilv 0.24.18-1 0.24.20-1 0.00 MiB 0.08 MiB
community/python-traitlets 5.3.0-1 5.4.0-1 0.01 MiB 0.20 MiB
archlinuxcn/rstudio-desktop-bin 2022.07.1.548-1 2022.07.1.554-2 0.00 MiB 134.26 MiB
community/wallutils 5.11.1-1 5.12.2-1 18.41 MiB 7.45 MiB
Total Download Size: 145.77 MiB
...
(8/8) checking available disk space [############################################################] 100%
:: Running pre-transaction hooks...
(1/1) HOOK : Display full description of packages (update/remove)
| gdu : Fast disk usage analyzer
| libgusb : GObject wrapper for libusb1
| libharu : C library for generating PDF documents
| libluv : Bare libuv bindings for lua
| lilv : A C library interface to the LV2 plug-in standard
| python-traitlets: A configuration system for Python applications
| rstudio-desktop-bin: An integrated development environment (IDE) for R (binary from RStudio official repository)
| wallutils : Utilities for handling resolutions, wallpapers and timed wallpapers
:: Processing package changes...
(1/8) upgrading gdu [############################################################] 100%
(2/8) upgrading libgusb [############################################################] 100%
(3/8) upgrading libharu [############################################################] 100%
...