if [ ! -f /usr/bin/g++-${new} ]; then
$SUDO tee /etc/apt/sources.list.d/ubuntu-toolchain-r.list <<EOF
-deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu $codename main
-deb [arch=amd64] http://mirror.cs.uchicago.edu/ubuntu-toolchain-r $codename main
-deb [arch=amd64,i386] http://mirror.yandex.ru/mirrors/launchpad/ubuntu-toolchain-r $codename main
+deb [lang=none] http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu $codename main
+deb [arch=amd64 lang=none] http://mirror.cs.uchicago.edu/ubuntu-toolchain-r $codename main
+deb [arch=amd64,i386 lang=none] http://mirror.yandex.ru/mirrors/launchpad/ubuntu-toolchain-r $codename main
EOF
# import PPA's signing key into APT's keyring
cat << ENDOFKEY | $SUDO apt-key add -
=LcUQ
-----END PGP PUBLIC KEY BLOCK-----
ENDOFKEY
- $SUDO env DEBIAN_FRONTEND=noninteractive apt-get update -y -o Acquire::Languages=none -o Acquire::Translation=none || true
+ $SUDO env DEBIAN_FRONTEND=noninteractive apt-get update -y || true
$SUDO env DEBIAN_FRONTEND=noninteractive apt-get install -y g++-7
fi