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authorLibravatar sommerfeld <sommerfeld@sommerfeld.dev>2026-05-13 13:43:16 +0100
committerLibravatar sommerfeld <sommerfeld@sommerfeld.dev>2026-05-13 13:43:16 +0100
commit208877d1e682536aa737748fffe4560956d3908a (patch)
treebbc2e909a312f8052bf9457b1521e8b0ef80ec4c /etc/kernel/cmdline.tmpl
parentd7cca9eca321a7986605c2842cf23cef18727452 (diff)
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feat(etc): template kernel cmdline, derive LUKS UUID from partition name
Prompt once at 'chezmoi init' time for the LUKS root partition (e.g. nvme0n1p2) and store it under [data].luksRootPartition in the per-machine chezmoi config. etc/kernel/cmdline.tmpl resolves the UUID at apply time via lsblk, so reinstalls only require re-entering the partition name. The etc deploy script now renders *.tmpl sources through 'chezmoi execute-template' and installs them without the suffix. The resolved UUID is folded into the onchange hash so the script re-runs when the UUID changes even if etc/ content is unchanged. just etc-status/diff transparently handle .tmpl sources (strip suffix for the live-path mapping, render before diffing). etc-re-add skips .tmpl files since template sources can't be reverse-rendered from the live file.
Diffstat (limited to 'etc/kernel/cmdline.tmpl')
-rw-r--r--etc/kernel/cmdline.tmpl1
1 files changed, 1 insertions, 0 deletions
diff --git a/etc/kernel/cmdline.tmpl b/etc/kernel/cmdline.tmpl
new file mode 100644
index 0000000..dab0461
--- /dev/null
+++ b/etc/kernel/cmdline.tmpl
@@ -0,0 +1 @@
+rd.luks.name={{ output "lsblk" "-no" "UUID" (printf "/dev/%s" .luksRootPartition) | trim }}=root root=/dev/mapper/root rw quiet