reorganize files and fix build.

+ build is split into dist and nox variants.

scripts/install-cmake-debian.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+
+set -eu
+
+
+source /etc/lsb-release
+
+preinstall () {
+  echo "[+] preparing to install"
+  sudo apt-get update
+  sudo apt-get install ca-certificates gpg wget
+}
+
+do_install () {
+if [ ! -f /etc/apt/sources.list.d/kitware.list ]
+then
+  echo "[+] fetching initial keyring"
+  wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null | gpg --dearmor - | sudo tee /usr/share/keyrings/kitware-archive-keyring.gpg >/dev/null
+
+  echo "[+] adding repo to sources.list.d"
+  echo "deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ ${DISTRIB_RELEASE} main" | \
+    sudo tee /etc/apt/sources.list.d/kitware.list >/dev/null
+  sudo apt-get update
+
+  echo "[+] installing kitware keyring"
+  if [ -f "/usr/share/keyrings/kitware-archive-keyring.gpg" ]
+  then
+    sudo rm /usr/share/keyrings/kitware-archive-keyring.gpg
+  fi
+  sudo apt-get install kitware-archive-keyring
+fi
+
+if [ "${USE_CMAKE_RC}" = "YES" ]
+then
+  echo 'deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ ${DISTRIB_RELEASE}-rc main' | \
+    sudo tee -a /etc/apt/sources.list.d/kitware.list >/dev/null
+  sudo apt-get update
+fi
+}
+
+sudo apt-get install cmake cmake-curses-gui cmake-extras

scripts/install-depdendencies.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+set -eu
+