diff --git a/Vagrantfile b/Vagrantfile
index fdb2feae1..669c0975a 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -7,13 +7,6 @@ $cpus = Integer(ENV.fetch('VMCPUS', '4'))  # create VMs with that many cpus
 $xdistn = Integer(ENV.fetch('XDISTN', '4'))  # dispatch tests to that many pytest workers
 $wmem = $xdistn * 256  # give the VM additional memory for workers [MB]
 
-def packages_prepare_wheezy
-  return <<-EOF
-      # debian 7 wheezy does not have lz4, but it is available from wheezy-backports:
-      echo "deb http://http.debian.net/debian wheezy-backports main" > /etc/apt/sources.list.d/wheezy-backports.list
-  EOF
-end
-
 def packages_debianoid
   return <<-EOF
     if id "vagrant" >/dev/null 2>&1; then
@@ -35,202 +28,16 @@ def packages_debianoid
     apt-get install -y python3-dev python3-setuptools
     # for building python:
     apt-get install -y zlib1g-dev libbz2-dev libncurses5-dev libreadline-dev liblzma-dev libsqlite3-dev
-    # this way it works on older dists (like ubuntu 12.04) also:
-    # for python 3.2 on ubuntu 12.04 we need pip<8 and virtualenv<14 as
-    # newer versions are not compatible with py 3.2 any more.
-    easy_install3 'pip<8.0'
-    pip3 install 'virtualenv<14.0'
+    easy_install3 'pip'
+    pip3 install 'virtualenv'
     touch $home_dir/.bash_profile ; chown $username $home_dir/.bash_profile
   EOF
 end
 
-def packages_redhatted
-  return <<-EOF
-    yum install -y epel-release
-    yum update -y
-    # for building borgbackup and dependencies:
-    yum install -y openssl-devel openssl libacl-devel libacl lz4-devel fuse-devel fuse pkgconfig
-    usermod -a -G fuse vagrant
-    chgrp fuse /dev/fuse
-    chmod 666 /dev/fuse
-    yum install -y fakeroot gcc git patch
-    # needed to compile msgpack-python (otherwise it will use slow fallback code):
-    yum install -y gcc-c++
-    # for building python:
-    yum install -y zlib-devel bzip2-devel ncurses-devel readline-devel xz xz-devel sqlite-devel
-    #yum install -y python-pip
-    #pip install virtualenv
-    touch ~vagrant/.bash_profile ; chown vagrant ~vagrant/.bash_profile
-  EOF
-end
-
-def packages_darwin
-  return <<-EOF
-    # install all the (security and other) updates
-    sudo softwareupdate --ignore iTunesX
-    sudo softwareupdate --ignore iTunes
-    sudo softwareupdate --install --all
-    # get osxfuse 3.x release code from github:
-    curl -s -L https://github.com/osxfuse/osxfuse/releases/download/osxfuse-3.6.3/osxfuse-3.6.3.dmg >osxfuse.dmg
-    MOUNTDIR=$(echo `hdiutil mount osxfuse.dmg | tail -1 | awk '{$1="" ; print $0}'` | xargs -0 echo) \
-    && sudo installer -pkg "${MOUNTDIR}/Extras/FUSE for macOS 3.6.3.pkg" -target /
-    sudo chown -R vagrant /usr/local  # brew must be able to create stuff here
-    ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
-    brew update
-    brew install openssl
-    brew install lz4
-    brew install xz  # required for python lzma module
-    brew install fakeroot
-    brew install git
-    brew install pkg-config
-    touch ~vagrant/.bash_profile ; chown vagrant ~vagrant/.bash_profile
-  EOF
-end
-
-def packages_freebsd
-  return <<-EOF
-    # VM has no hostname set
-    hostname freebsd
-    # install all the (security and other) updates, base system
-    freebsd-update --not-running-from-cron fetch install
-    # for building borgbackup and dependencies:
-    pkg install -y openssl liblz4 fusefs-libs pkgconf
-    pkg install -y git bash
-    # for building python:
-    pkg install -y sqlite3
-    # make bash default / work:
-    chsh -s bash vagrant
-    mount -t fdescfs fdesc /dev/fd
-    echo 'fdesc	/dev/fd		fdescfs		rw	0	0' >> /etc/fstab
-    # make FUSE work
-    echo 'fuse_load="YES"' >> /boot/loader.conf
-    echo 'vfs.usermount=1' >> /etc/sysctl.conf
-    kldload fuse
-    sysctl vfs.usermount=1
-    pw groupmod operator -M vagrant
-    # /dev/fuse has group operator
-    chmod 666 /dev/fuse
-    touch ~vagrant/.bash_profile ; chown vagrant ~vagrant/.bash_profile
-    # install all the (security and other) updates, packages
-    pkg update
-    yes | pkg upgrade
-  EOF
-end
-
-def packages_openbsd
-  return <<-EOF
-    echo 'installpath = http://ftp.hostserver.de/pub/OpenBSD/6.0/packages/amd64/' > /etc/pkg.conf
-    echo 'export PKG_PATH=http://ftp.hostserver.de/pub/OpenBSD/6.0/packages/amd64/' >> ~/.profile
-    . ~/.profile
-    pkg_add bash
-    chsh -s /usr/local/bin/bash vagrant
-    pkg_add openssl
-    pkg_add lz4
-    pkg_add git  # no fakeroot
-    pkg_add py3-setuptools
-    # TODO: python 3.5 or 3.6
-    ln -sf /usr/local/bin/python3.4 /usr/local/bin/python3
-    ln -sf /usr/local/bin/python3.4 /usr/local/bin/python
-    easy_install-3.4 pip
-    pip3 install virtualenv
-    touch ~vagrant/.bash_profile ; chown vagrant ~vagrant/.bash_profile
-  EOF
-end
-
-def packages_netbsd
-  return <<-EOF
-    hostname netbsd  # the box we use has an invalid hostname
-    PKG_PATH="ftp://ftp.NetBSD.org/pub/pkgsrc/packages/NetBSD/amd64/6.1.5/All/"
-    export PKG_PATH
-    pkg_add mozilla-rootcerts lz4 git bash
-    chsh -s bash vagrant
-    mkdir -p /usr/local/opt/lz4/include
-    mkdir -p /usr/local/opt/lz4/lib
-    ln -s /usr/pkg/include/lz4*.h /usr/local/opt/lz4/include/
-    ln -s /usr/pkg/lib/liblz4* /usr/local/opt/lz4/lib/
-    touch /etc/openssl/openssl.cnf  # avoids a flood of "can't open ..."
-    mozilla-rootcerts install
-    pkg_add pkg-config  # avoids some "pkg-config missing" error msg, even without fuse pkg
-    # pkg_add fuse  # llfuse supports netbsd, but is still buggy.
-    # https://bitbucket.org/nikratio/python-llfuse/issues/70/perfuse_open-setsockopt-no-buffer-space
-    # TODO: python 3.5 or 3.6
-    pkg_add python34 py34-setuptools
-    ln -s /usr/pkg/bin/python3.4 /usr/pkg/bin/python
-    ln -s /usr/pkg/bin/python3.4 /usr/pkg/bin/python3
-    easy_install-3.4 pip
-    pip install virtualenv
-    touch ~vagrant/.bash_profile ; chown vagrant ~vagrant/.bash_profile
-  EOF
-end
-
-def packages_openindiana
-  return <<-EOF
-    #pkg update  # XXX needs separate provisioning step + reboot
-    # TODO python 3.5 or 3.6
-    pkg install python-34 clang-3.4 lz4 git
-    python3 -m ensurepip
-    pip3 install -U setuptools pip wheel virtualenv
-    touch ~vagrant/.bash_profile ; chown vagrant ~vagrant/.bash_profile
-  EOF
-end
-
-# Install required cygwin packages and configure environment
-#
-# Microsoft/EdgeOnWindows10 image has MLS-OpenSSH installed by default,
-# which is based on cygwin x86_64 but should not be used together with cygwin.
-# In order to have have cygwin compatible bash 'ImagePath' is replaced with
-# cygrunsrv of newly installed cygwin
-#
-# supported cygwin versions:
-#   x86_64
-#   x86
-def packages_cygwin(version)
-  setup_exe = "setup-#{version}.exe"
-
-  return <<-EOF
-    mkdir -p /cygdrive/c/cygwin
-    powershell -Command '$client = new-object System.Net.WebClient; $client.DownloadFile("https://www.cygwin.com/#{setup_exe}","C:\\cygwin\\#{setup_exe}")'
-    echo '
-    REM --- Change to use different CygWin platform and final install path
-    set CYGSETUP=#{setup_exe}
-    REM --- Install build version of CygWin in a subfolder
-    set OURPATH=%cd%
-    set CYGBUILD="C:\\cygwin\\CygWin"
-    set CYGMIRROR=http://mirrors.kernel.org/sourceware/cygwin/
-    set BASEPKGS=openssh,rsync
-    set BUILDPKGS=python3,python3-setuptools,python-devel,binutils,gcc-g++,libopenssl,openssl-devel,git,make,liblz4-devel,liblz4_1,curl
-    %CYGSETUP% -q -B -o -n -R %CYGBUILD% -L -D -s %CYGMIRROR% -P %BASEPKGS%,%BUILDPKGS%
-    cd /d C:\\cygwin\\CygWin\\bin
-    regtool set /HKLM/SYSTEM/CurrentControlSet/Services/OpenSSHd/ImagePath "C:\\cygwin\\CygWin\\bin\\cygrunsrv.exe"
-    bash -c "ssh-host-config --no"
-    bash -c "chown sshd_server /cygdrive/c/cygwin/CygWin/var/empty"
-    ' > /cygdrive/c/cygwin/install.bat
-
-    echo "alias mkdir='mkdir -p'" > ~/.profile
-    echo "export CYGWIN_ROOT=/cygdrive/c/cygwin/CygWin" >> ~/.profile
-    echo 'export PATH=$CYGWIN_ROOT/bin:$PATH' >> ~/.profile
-
-    echo '' > ~/.bash_profile
-
-    cmd.exe /c 'setx /m PATH "C:\\cygwin\\CygWin\\bin;%PATH%"'
-    source ~/.profile
-    cd /cygdrive/c/cygwin && cmd.exe /c install.bat
-
-    echo 'db_home: windows' > $CYGWIN_ROOT/etc/nsswitch.conf
-  EOF
-end
-
-def install_cygwin_venv
-  return <<-EOF
-      python3 -m ensurepip -U --default-pip
-      pip install virtualenv
-  EOF
-end
-
 def install_pyenv(boxname)
   script = <<-EOF
     curl -s -L https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/pyenv-installer | bash
-    echo 'export PATH="$HOME/.pyenv/bin:/vagrant/borg:$PATH"' >> ~/.bash_profile
+    echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> ~/.bash_profile
     echo 'eval "$(pyenv init -)"' >> ~/.bash_profile
     echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bash_profile
     echo 'export PYTHON_CONFIGURE_OPTS="--enable-shared"' >> ~/.bash_profile
@@ -322,6 +129,7 @@ def build_binary_with_pyinstaller(boxname)
     . borg-env/bin/activate
     cd borg
     pyinstaller --clean --distpath=/vagrant/borg scripts/borg.exe.spec
+    echo 'export PATH="/vagrant/borg:$PATH"' >> ~/.bash_profile
   EOF
 end
 
@@ -371,46 +179,6 @@ Vagrant.configure(2) do |config|
     v.cpus = $cpus
   end
 
-  # Linux
-  config.vm.define "centos7_64" do |b|
-    b.vm.box = "centos/7"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1024 + $wmem
-    end
-    b.vm.provision "install system packages", :type => :shell, :inline => packages_redhatted
-    b.vm.provision "install pyenv", :type => :shell, :privileged => false, :inline => install_pyenv("centos7_64")
-    b.vm.provision "install pythons", :type => :shell, :privileged => false, :inline => install_pythons("centos7_64")
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_pyenv_venv("centos7_64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(true)
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("centos7_64")
-  end
-
-  config.vm.define "centos6_32" do |b|
-    b.vm.box = "centos6-32"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 768 + $wmem
-    end
-    b.vm.provision "install system packages", :type => :shell, :inline => packages_redhatted
-    b.vm.provision "install pyenv", :type => :shell, :privileged => false, :inline => install_pyenv("centos6_32")
-    b.vm.provision "install pythons", :type => :shell, :privileged => false, :inline => install_pythons("centos6_32")
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_pyenv_venv("centos6_32")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(false)
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("centos6_32")
-  end
-
-  config.vm.define "centos6_64" do |b|
-    b.vm.box = "centos6-64"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1024 + $wmem
-    end
-    b.vm.provision "install system packages", :type => :shell, :inline => packages_redhatted
-    b.vm.provision "install pyenv", :type => :shell, :privileged => false, :inline => install_pyenv("centos6_64")
-    b.vm.provision "install pythons", :type => :shell, :privileged => false, :inline => install_pythons("centos6_64")
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_pyenv_venv("centos6_64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(false)
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("centos6_64")
-  end
-
   config.vm.define "xenial64" do |b|
     b.vm.box = "ubuntu/xenial64"
     b.vm.provider :virtualbox do |v|
@@ -422,17 +190,6 @@ Vagrant.configure(2) do |config|
     b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("xenial64")
   end
 
-  config.vm.define "trusty64" do |b|
-    b.vm.box = "ubuntu/trusty64"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1024 + $wmem
-    end
-    b.vm.provision "packages debianoid", :type => :shell, :inline => packages_debianoid
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_sys_venv("trusty64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(true)
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("trusty64")
-  end
-
   config.vm.define "stretch64" do |b|
     b.vm.box = "debian/stretch64"
     b.vm.provider :virtualbox do |v|
@@ -441,155 +198,11 @@ Vagrant.configure(2) do |config|
     b.vm.provision "packages debianoid", :type => :shell, :inline => packages_debianoid
     b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_sys_venv("stretch64")
     b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(true)
+    b.vm.provision "install pyinstaller", :type => :shell, :privileged => false, :inline => install_pyinstaller()
+    b.vm.provision "build binary with pyinstaller", :type => :shell, :privileged => false, :inline => build_binary_with_pyinstaller("stretch64")
     b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("stretch64")
   end
 
-  config.vm.define "jessie64" do |b|
-    b.vm.box = "debian/jessie64"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1024 + $wmem
-    end
-    b.vm.provision "packages debianoid", :type => :shell, :inline => packages_debianoid
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_sys_venv("jessie64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(true)
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("jessie64")
-  end
-
-  config.vm.define "wheezy32" do |b|
-    b.vm.box = "boxcutter/debian7-i386"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 768 + $wmem
-    end
-    b.vm.provision "packages prepare wheezy", :type => :shell, :inline => packages_prepare_wheezy
-    b.vm.provision "packages debianoid", :type => :shell, :inline => packages_debianoid
-    b.vm.provision "install pyenv", :type => :shell, :privileged => false, :inline => install_pyenv("wheezy32")
-    b.vm.provision "install pythons", :type => :shell, :privileged => false, :inline => install_pythons("wheezy32")
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_pyenv_venv("wheezy32")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(true)
-    b.vm.provision "install pyinstaller", :type => :shell, :privileged => false, :inline => install_pyinstaller()
-    b.vm.provision "build binary with pyinstaller", :type => :shell, :privileged => false, :inline => build_binary_with_pyinstaller("wheezy32")
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("wheezy32")
-  end
-
-  config.vm.define "wheezy64" do |b|
-    b.vm.box = "boxcutter/debian7"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1024 + $wmem
-    end
-    b.vm.provision "packages prepare wheezy", :type => :shell, :inline => packages_prepare_wheezy
-    b.vm.provision "packages debianoid", :type => :shell, :inline => packages_debianoid
-    b.vm.provision "install pyenv", :type => :shell, :privileged => false, :inline => install_pyenv("wheezy64")
-    b.vm.provision "install pythons", :type => :shell, :privileged => false, :inline => install_pythons("wheezy64")
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_pyenv_venv("wheezy64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(true)
-    b.vm.provision "install pyinstaller", :type => :shell, :privileged => false, :inline => install_pyinstaller()
-    b.vm.provision "build binary with pyinstaller", :type => :shell, :privileged => false, :inline => build_binary_with_pyinstaller("wheezy64")
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("wheezy64")
-  end
-
-  # OS X
-  config.vm.define "darwin64" do |b|
-    b.vm.box = "jhcook/yosemite-clitools"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1536 + $wmem
-      v.customize ['modifyvm', :id, '--ostype', 'MacOS1010_64']
-      v.customize ['modifyvm', :id, '--paravirtprovider', 'default']
-      # Adjust CPU settings according to
-      # https://github.com/geerlingguy/macos-virtualbox-vm
-      v.customize ['modifyvm', :id, '--cpuidset',
-                   '00000001', '000306a9', '00020800', '80000201', '178bfbff']
-      # Disable USB variant requiring Virtualbox proprietary extension pack
-      v.customize ["modifyvm", :id, '--usbehci', 'off', '--usbxhci', 'off']
-    end
-    b.vm.provision "packages darwin", :type => :shell, :privileged => false, :inline => packages_darwin
-    b.vm.provision "install pyenv", :type => :shell, :privileged => false, :inline => install_pyenv("darwin64")
-    b.vm.provision "fix pyenv", :type => :shell, :privileged => false, :inline => fix_pyenv_darwin("darwin64")
-    b.vm.provision "install pythons", :type => :shell, :privileged => false, :inline => install_pythons("darwin64")
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_pyenv_venv("darwin64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(true)
-    b.vm.provision "install pyinstaller", :type => :shell, :privileged => false, :inline => install_pyinstaller()
-    b.vm.provision "build binary with pyinstaller", :type => :shell, :privileged => false, :inline => build_binary_with_pyinstaller("darwin64")
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("darwin64")
-  end
-
-  # BSD
-  # note: the FreeBSD-10.3-RELEASE box needs "vagrant up" twice to start.
-  config.vm.define "freebsd64" do |b|
-    b.vm.box = "freebsd/FreeBSD-10.3-RELEASE"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1024 + $wmem
-    end
-    b.ssh.shell = "sh"
-    b.vm.provision "install system packages", :type => :shell, :inline => packages_freebsd
-    b.vm.provision "install pyenv", :type => :shell, :privileged => false, :inline => install_pyenv("freebsd")
-    b.vm.provision "install pythons", :type => :shell, :privileged => false, :inline => install_pythons("freebsd")
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_pyenv_venv("freebsd")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(true)
-    b.vm.provision "install pyinstaller", :type => :shell, :privileged => false, :inline => install_pyinstaller()
-    b.vm.provision "build binary with pyinstaller", :type => :shell, :privileged => false, :inline => build_binary_with_pyinstaller("freebsd")
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("freebsd")
-  end
-
-  config.vm.define "openbsd64" do |b|
-    b.vm.box = "openbsd60-64"  # note: basic openbsd install for vagrant WITH sudo and rsync pre-installed
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1024 + $wmem
-    end
-    b.ssh.shell = "sh"
-    b.vm.provision "packages openbsd", :type => :shell, :inline => packages_openbsd
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_sys_venv("openbsd64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(false)
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("openbsd64")
-  end
-
-  config.vm.define "netbsd64" do |b|
-    b.vm.box = "netbsd70-64"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1024 + $wmem
-    end
-    b.vm.provision "packages netbsd", :type => :shell, :inline => packages_netbsd
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_sys_venv("netbsd64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(false)
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("netbsd64")
-  end
-
-  # rsync on openindiana has troubles, does not set correct owner for /vagrant/borg and thus gives lots of
-  # permission errors. can be manually fixed in the VM by: sudo chown -R vagrant /vagrant/borg ; then rsync again.
-  config.vm.define "openindiana64" do |b|
-    b.vm.box = "openindiana/hipster"
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1536 + $wmem
-    end
-    b.vm.provision "packages openindiana", :type => :shell, :inline => packages_openindiana
-    b.vm.provision "build env", :type => :shell, :privileged => false, :inline => build_sys_venv("openindiana64")
-    b.vm.provision "install borg", :type => :shell, :privileged => false, :inline => install_borg(false)
-    b.vm.provision "run tests", :type => :shell, :privileged => false, :inline => run_tests("openindiana64")
-  end
-
-  config.vm.define "windows10" do |b|
-    b.vm.box = "Microsoft/EdgeOnWindows10"
-    b.vm.guest = :windows
-    b.vm.boot_timeout = 180
-    b.vm.graceful_halt_timeout = 120
-
-    b.ssh.shell = "sh -l"
-    b.ssh.username = "IEUser"
-    b.ssh.password = "Passw0rd!"
-    b.ssh.insert_key = false
-
-    b.vm.provider :virtualbox do |v|
-      v.memory = 1536 + $wmem
-      #v.gui = true
-    end
-
-    # fix permissions placeholder
-    b.vm.provision "fix perms", :type => :shell,  :privileged => false, :inline => "echo 'fix permission placeholder'"
-
-    b.vm.provision "packages cygwin", :type => :shell, :privileged => false, :inline => packages_cygwin("x86_64")
-    b.vm.provision :reload
-    b.vm.provision "cygwin install pip", :type => :shell, :privileged => false, :inline => install_cygwin_venv
-    b.vm.provision "cygwin build env", :type => :shell, :privileged => false, :inline => build_sys_venv("windows10")
-    b.vm.provision "cygwin install borg", :type => :shell, :privileged => false, :inline => install_borg(false)
-    b.vm.provision "cygwin run tests", :type => :shell, :privileged => false, :inline => run_tests("windows10")
-  end
+  # TODO: create more VMs with python 3.5+ and openssl 1.1.
+  # See branch 1.1-maint for a better equipped Vagrantfile (but still on py34 and openssl 1.0).
 end