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{ runCommand, imagemagick, i3lock-color, lib, backgroundImage ? null, resolution ? "1920x1080" }:
let useBackgroundImage = backgroundImage != null;
in runCommand "lockscreen" { envVariable = true; } (''
mkdir -p $out/{bin,share}
'' + (lib.optionalString useBackgroundImage ''
${imagemagick}/bin/convert ${backgroundImage} -resize ${resolution} -blur 0x5 RGB:$out/share/lockscreen.png
'') + ''
echo > $out/bin/lockscreen.sh \
"export PATH=$PATH
${i3lock-color}/bin/i3lock-color \\
'' + (lib.optionalString useBackgroundImage ''
--raw ${resolution}:rgb \\
--image $out/share/lockscreen.png \\
'') + ''
--no-unlock-indicator \\
--composite \\
--clock \\
--ignore-empty-password \\
--time-color=FFFFFFFF \\
--date-color=00000000 \\
--time-size=100"
'' + (lib.optionalString useBackgroundImage ''
chmod 444 $out/share/lockscreen.png
'') + ''
chmod 555 $out/bin/lockscreen.sh
chmod 555 $out/{bin,share}
'')
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