error:
while evaluating the attribute 'drvPath'

         at /nix/store/x74ckj67m4v6nl52g8njpgyxibaj45y7-source/lib/customisation.nix:222:7:

          221|     in commonAttrs // {
          222|       drvPath = assert condition; drv.drvPath;
             |       ^
          223|       outPath = assert condition; drv.outPath;

while calling the 'derivationStrict' builtin

         at /builtin/derivation.nix:9:12: (source not available)

       (stack trace truncated; use '--show-trace' to show the full trace)

       error: The option `disko.devices.disk.sda.content.partitions."[definition 1-entry 1]".content._pkgs' is read-only, but it's set multiple times. Definition values:
       - In `/nix/store/jh41lfi410wkcdchywd02xlybs82hcqg-source/lib/types/filesystem.nix': <function>
       - In `<unknown-file>': <function>