docs: update mkosi version mentioned in HACKING.md (#33723)

* fix: update docs since the default config uses a setting only available in v23

* fix: update docs to only refer to installing from the mkosi repo

diff --git a/docs/HACKING.md b/docs/HACKING.md
index a656f2ddb0e63941c3e280e4d0832111c0f03c08..670cbb9deaae0fbbb7cf4fdc74287a2ea8264309 100644 (file)
--- a/docs/HACKING.md
+++ b/docs/HACKING.md
@@ -29,8 +29,7 @@ For some components (most importantly, systemd/PID 1 itself) this is not possibl
 In order to simplify testing for cases like this we provide a set of `mkosi` config files directly in the source tree.
 [mkosi](https://mkosi.systemd.io/)
 is a tool for building clean OS images from an upstream distribution in combination with a fresh build of the project in the local working directory.
-To make use of this, please install `mkosi` v19 or newer using your distribution's package manager or from the
-[GitHub repository](https://github.com/systemd/mkosi).
+To make use of this, please install `mkosi` from the [GitHub repository](https://github.com/systemd/mkosi#running-mkosi-from-the-repository).
 `mkosi` will build an image for the host distro by default.
 First, run `mkosi genkey` to generate a key and certificate to be used for secure boot and verity signing.
 After that is done, it is sufficient to type `mkosi` in the systemd project directory to generate a disk image you can boot either in `systemd-nspawn` or in a UEFI-capable VM:
@@ -76,8 +75,8 @@ pid1 or `systemctl soft-reboot` to restart everything.
 Putting this all together, here's a series of commands for preparing a patch for systemd:
 
 ```sh
-$ git clone https://github.com/systemd/mkosi.git  # If mkosi v19 or newer is not packaged by your distribution
-$ ln -s $PWD/mkosi/bin/mkosi /usr/local/bin/mkosi # If mkosi v19 or newer is not packaged by your distribution
+$ git clone https://github.com/systemd/mkosi.git
+$ ln -s $PWD/mkosi/bin/mkosi /usr/local/bin/mkosi
 $ git clone https://github.com/systemd/systemd.git
 $ cd systemd
 $ git checkout -b <BRANCH>        # where BRANCH is the name of the branch