From 8ea2f75b72e11beb34121022e4d3243bd2fb6c89 Mon Sep 17 00:00:00 2001
From: Florian Klink <flokli@flokli.de>
Date: Sat, 26 Feb 2022 23:24:38 +0100
Subject: [PATCH] nixos/kexec-boot: use dirname of script to resolve bzImage
 and initrd.gz

This will allow invoking the `kexec-boot` script without `cd`-ing into
its folder first.
---
 nixos/modules/installer/kexec/kexec-boot.nix | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/nixos/modules/installer/kexec/kexec-boot.nix b/nixos/modules/installer/kexec/kexec-boot.nix
index c2f1a64a36a0..95ab774468c1 100644
--- a/nixos/modules/installer/kexec/kexec-boot.nix
+++ b/nixos/modules/installer/kexec/kexec-boot.nix
@@ -27,8 +27,9 @@
             echo "kexec not found: please install kexec-tools" 2>&1
             exit 1
           fi
-          kexec --load ./bzImage \
-            --initrd=./initrd.gz \
+          SCRIPT_DIR=$( cd -- "$( dirname -- "''${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+          kexec --load ''${SCRIPT_DIR}/bzImage \
+            --initrd=''${SCRIPT_DIR}/initrd.gz \
             --command-line "init=${config.system.build.toplevel}/init ${toString config.boot.kernelParams}"
           kexec -e
         ''; in