stockholm/krebs/5pkgs/simple/pager.nix

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{ pkgs }:
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pkgs.symlinkJoin {
name = "pager-wrapper";
paths = [
(pkgs.writeDashBin "pager" ''
# usage: pager {view,shift,shiftview}
#
# Environment variables
#
# PAGER_NAME (default: Pager)
# The environment variables specifies the application name under
# which resources are to be obtained. PAGER_NAME should not contain
# “.” or “*” characters.
#
set -efu
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pidfile=$XDG_RUNTIME_DIR/pager.lock
name=''${PAGER_NAME-Pager}
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if test -e "$pidfile" &&
${pkgs.procps}/bin/pgrep --pidfile="$pidfile" >/dev/null
then
${pkgs.procps}/bin/pkill --pidfile="$pidfile"
${pkgs.coreutils}/bin/rm "$pidfile"
exit
fi
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echo $$ > "$pidfile"
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exec ${pkgs.xterm}/bin/xterm \
-name "$name" \
-ti vt340 \
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-xrm '*geometry: 32x10' \
-xrm '*internalBorder: 2' \
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-e ${pkgs.haskellPackages.pager}/bin/pager "$@"
'')
pkgs.haskellPackages.pager
];
}