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-rw-r--r--nixos/lib/systemd-lib.nix5
1 files changed, 5 insertions, 0 deletions
diff --git a/nixos/lib/systemd-lib.nix b/nixos/lib/systemd-lib.nix
index 832160111da4e..b67495609ff5a 100644
--- a/nixos/lib/systemd-lib.nix
+++ b/nixos/lib/systemd-lib.nix
@@ -525,4 +525,9 @@ in rec {
       )}
     '';
 
+  # The maximum number of characters allowed in a GPT partition label. This
+  # limit is specified by UEFI and enforced by systemd-repart.
+  # Corresponds to GPT_LABEL_MAX from systemd's gpt.h.
+  GPTMaxLabelLength = 36;
+
 }