[MacPorts] #48907: encounter error while it is installing opam with macport

[MacPorts]

#48907: encounter error while it is installing opam with macport
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 Reporter:  275438859@…  |      Owner:  macports-tickets@…
     Type:  defect       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.3.3
 Keywords:               |       Port:
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 Hi,
     I wanna install opam for my MacBook Pro (osx10.8.5 mountainlion) with
 macport. Unfortunately,I get error while it is installing.How could I fix
 it?Thank you for your help!
 yours!
 here is the message comes from terminal:
 $ sudo port install opam
 --->  Computing dependencies for opam
 --->  Dependencies to be installed: aspcud gringo re2c scons
 --->  Verifying checksums for re2c
 Error: org.macports.checksum for port re2c returned: re2c-0.14.3.tar.gz
 does not exist in /opt/local/var/macports/distfiles/re2c
 Error: Failed to install re2c
 Please see the log file for port re2c for details:
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_re2c/re2c/main.log
 Error: The following dependencies were not installed: aspcud gringo re2c
 scons
 To report a bug, follow the instructions in the guide:
     http://guide.macports.org/#project.tickets
 Error: Processing of port opam failed

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Ticket URL: <https://trac.macports.org/ticket/48907>
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