[MacPorts] #57721: ds9: fatal error: 'X11/Xlib.h' file not found

[MacPorts]

#57721: ds9: fatal error: 'X11/Xlib.h' file not found
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Reporter: ryandesign | Owner: lpsinger
Type: defect | Status: assigned
Priority: Normal | Milestone:
Component: ports | Version:
Keywords: | Port: ds9
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[https://build.macports.org/builders/ports-10.14_x86_64-builder/builds/17243/steps
/install-port/logs/stdio ds9 does not build]:

{{{
fatal error: 'X11/Xlib.h' file not found
# include <X11/Xlib.h>
^~~~~~~~~~~~
1 error generated.
}}}