[MacPorts] #70933: csv2strings: restrict to systems supporting swift

[MacPorts]

#70933: csv2strings: restrict to systems supporting swift
--------------------------+-------------------------
 Reporter:  barracuda156  |      Owner:  csknns
     Type:  defect        |     Status:  assigned
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.10.1
 Keywords:                |       Port:  csv2strings
--------------------------+-------------------------
 {{{
 --->  Building csv2strings
 Executing:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_csv2strings/csv2strings/work/csv2strings-1.1.2"
 && swift build --configuration release --disable-sandbox
 sh: swift: command not found
 Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_csv2strings/csv2strings/work/csv2strings-1.1.2"
 && swift build --configuration release --disable-sandbox
 Exit code: 127
 }}}[[Image()]]

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Ticket URL: <https://trac.macports.org/ticket/70933>
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