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home-manager/docs/html-open-tool.nix

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{ writeShellScriptBin, makeDesktopItem, symlinkJoin }:
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{ html, pathName ? "home-manager", projectName ? pathName
, name ? "${pathName}-help" }:
let
helpScript = writeShellScriptBin name ''
set -euo pipefail
if [[ ! -v BROWSER || -z $BROWSER ]]; then
for candidate in xdg-open open w3m; do
BROWSER="$(type -P $candidate || true)"
if [[ -x $BROWSER ]]; then
break;
fi
done
fi
if [[ ! -v BROWSER || -z $BROWSER ]]; then
echo "$0: unable to start a web browser; please set \$BROWSER"
exit 1
else
exec "$BROWSER" "${html}/share/doc/${pathName}/index.xhtml"
fi
'';
desktopItem = makeDesktopItem {
name = "${pathName}-manual";
desktopName = "${projectName} Manual";
genericName = "View ${projectName} documentation in a web browser";
icon = "nix-snowflake";
exec = "${helpScript}/bin/${name}";
categories = [ "System" ];
};
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in symlinkJoin {
inherit name;
paths = [ helpScript desktopItem ];
}