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make-disk-image: embed compression switch into the format name

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This commit is contained in:
Orivej Desh 2017-11-12 18:29:01 +00:00
parent 608de48fe4
commit 27f5cc959b
1 changed files with 6 additions and 6 deletions
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12
nixos/lib/make-disk-image.nix
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@ -33,17 +33,17 @@
, name ? "nixos-disk-image" , name ? "nixos-disk-image"
, # Disk image format, one of qcow2, vpc, raw. , # Disk image format, one of qcow2, qcow2-compressed, vpc, raw.
format ? "raw" format ? "raw"
, # Whether to compress the image, applicable only when the format is qcow2.
compressed ? false
}: }:
with lib; with lib;
let let format' = format; in let
compress = optionalString compressed (assert format == "qcow2"; "-c");
format = if (format' == "qcow2-compressed") then "qcow2" else format;
compress = optionalString (format' == "qcow2-compressed") "-c";
filename = "nixos." + { filename = "nixos." + {
qcow2 = "qcow2"; qcow2 = "qcow2";