Problem with CGAL installation via VCPKG

[Frank-Dz]

When I tried to install CGAL with qt5 via VCPKG. I always met such a problem.

-- Using source at C:/local/vcpkg/buildtrees/icu/src/c-65_1-src-702c9cff96 -- Acquiring MSYS2... -- Using cached C:/local/vcpkg/downloads/msys2-base-x86_64-20181211.tar.xz gpg: /etc/pacman.d/gnupg/trustdb.gpg: trustdb created gpg: no ultimately trusted keys found gpg: starting migration from earlier GnuPG versions gpg: porting secret keys from '/etc/pacman.d/gnupg/secring.gpg' to gpg-agent gpg: migration succeeded gpg: Generating pacman keyring master key... gpg: key D275FF753336897E marked as ultimately trusted gpg: directory '/etc/pacman.d/gnupg/openpgp-revocs.d' created gpg: revocation certificate stored as '/etc/pacman.d/gnupg/openpgp-revocs.d/23B2FA5E0368BDA2AC1B653BD275FF753336897E.rev' gpg: Done ==> Updating trust database... gpg: marginals needed: 3 completes needed: 1 trust model: pgp gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u ==> Appending keys from msys2.gpg... ==> Locally signing trusted keys in keyring... -> Locally signing key D55E7A6D7CE9BA1587C0ACACF40D263ECA25678A... -> Locally signing key 123D4D51A1793859C2BE916BBBE514E53E0D0813... -> Locally signing key B91BCF3303284BF90CC043CA9F418C233E652008... -> Locally signing key 9DD0D4217D75A33B896159E6DA7EF2ABAEEA755C... ==> Importing owner trust values... gpg: setting ownertrust to 4 gpg: setting ownertrust to 4 gpg: setting ownertrust to 4 gpg: inserting ownertrust of 4 ==> Updating trust database... gpg: marginals needed: 3 completes needed: 1 trust model: pgp gpg: depth: 0 valid: 1 signed: 4 trust: 0-, 0q, 0n, 0m, 0f, 1u gpg: depth: 1 valid: 4 signed: 3 trust: 0-, 0q, 0n, 4m, 0f, 0u gpg: depth: 2 valid: 3 signed: 0 trust: 3-, 0q, 0n, 0m, 0f, 0u :: Synchronizing package databases... downloading mingw32.db... error: failed retrieving file 'mingw32.db' from repo.msys2.org : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds downloading mingw32.db... error: failed retrieving file 'mingw32.db' from sourceforge.net : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds downloading mingw32.db... error: failed retrieving file 'mingw32.db' from www2.futureware.at : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds error: failed retrieving file 'mingw32.db' from mirror.yandex.ru : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds error: failed to update mingw32 (download library error) downloading mingw64.db... error: failed retrieving file 'mingw64.db' from repo.msys2.org : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds error: failed retrieving file 'mingw64.db' from sourceforge.net : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds downloading mingw64.db... error: failed retrieving file 'mingw64.db' from www2.futureware.at : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds error: failed retrieving file 'mingw64.db' from mirror.yandex.ru : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds error: failed to update mingw64 (download library error) downloading msys.db... error: failed retrieving file 'msys.db' from repo.msys2.org : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds downloading msys.db... error: failed retrieving file 'msys.db' from sourceforge.net : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds downloading msys.db... error: failed retrieving file 'msys.db' from www2.futureware.at : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds error: failed retrieving file 'msys.db' from mirror.yandex.ru : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds error: failed to update msys (download library error) error: failed to synchronize all databases

The cause is that CGAL with QT5 needs msys2-base-x86_64-20181211.tar.xz.
But when install this pkg, there is something wrong with the command which has been reported in here
Seems like we need to add some commands to cancel time-out setting.

ENV: windows-64, vs17.

How can we fix such a problem?

Best,
Frank

[Frank-Dz]

It is an endless loop:

[Frank-Dz]

Problem solved following these steps:

• Go to:
  ...\vcpkg\downloads\tools\msys2\msys64\msys2.exe

• Enter in the terminal
  pacman -Syyuu --disable-download-timeout --noconfirm --needed --overwrite '*'

• Set proxy (if necessary) in the terminal
  export http_proxy=http://www-myproxy.example.com:8080
export https_proxy=$http_proxy
export ftp_proxy=$http_proxy

• Install
  pacman -Syyuu --disable-download-timeout --noconfirm --needed --overwrite '*'

• try again
  vcpkg install icu:x64-windows
vcpkg install cgal[qt]:x64-windows

Thank you!