[MacPorts] #63310: "port install" should mark a port as requested even if it is already installed

[MacPorts]

#63310: "port install" should mark a port as requested even if it is already
installed
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 Reporter:  saagarjha    |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  base         |    Version:
 Keywords:               |       Port:
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 If a port is already installed, "port install" doesn't need to install
 anything but it should mark the port as requested if it wasn't already.

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Ticket URL: <https://trac.macports.org/ticket/63310>
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