[MacPorts] #61295: port clang-10 fetch issue?

[MacPorts]

#61295: port clang-10 fetch issue?
-----------------------------------+----------------------------
 Reporter:  mpachucki              |      Owner:  (none)
     Type:  defect                 |     Status:  new
 Priority:  Normal                 |  Milestone:  MacPorts 2.7.0
Component:  ports                  |    Version:  2.6.3
 Keywords:  R, data.table, OpenMP  |       Port:  clang-10
-----------------------------------+----------------------------
 Hi folks, I'm trying to 'sudo port install clang-10 pkgconfig' (in order
 to install R software, a package called data.table, which requires OpenMP,
 which requires llvm) and appear to be getting a 'Warning: failed to verify
 signature for archive!' error, which appears to be a fetch-related error.

 --->  Computing dependencies for clang-10
 --->  Fetching archive for clang_select
 --->  Attempting to fetch clang_select-2.2_0.darwin_19.noarch.tbz2 from
 http://jog.id.packages.macports.org/macports/packages/clang_select
 --->  Attempting to fetch clang_select-2.2_0.darwin_19.noarch.tbz2.rmd160
 from http://jog.id.packages.macports.org/macports/packages/clang_select
 Warning: Failed to verify signature for archive!

 It's apparently hanging on 'clang-select' before moving down to the other
 dependencies. I already tried (1) sudo port clean, (2) searching prior
 tickets (closest was ticket #60584), (3) I don't think it's a port upgrade
 issue, (4) under problemhotlist, when I visit the main MacPorts distfiles
 mirror, clang-10 doesn't appear there. Any ideas? (I'm following a
 installation wiki here:
 https://github.com/Rdatatable/data.table/wiki/Installation#openmp-enabled-
 compiler-for-mac) I'm a professor who uses R for data analysis, and not a
 developer, so any layperson language would be greatly appreciated. I'm
 running Mac OS 10.15.6, Xcode 12 (which some will likely point out is the
 first problem). Thanks in advance.

-- 
Ticket URL: <https://trac.macports.org/ticket/61295>
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