======= gcc-10 =======
sudo apt install g++-10

https://askubuntu.com/questions/1028601/install-gcc-8-only-on-ubuntu-18-04
https://linuxize.com/post/how-to-install-gcc-compiler-on-ubuntu-18-04/

======= clang-11 =======
sudo wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -
sudo apt-add-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main"
sudo apt-get install clang-11 lldb-11 lld-11

======= CMake ===============
sudo apt-get install cmake

# or build desired version from source
# https://askubuntu.com/questions/355565/how-do-i-install-the-latest-version-of-cmake-from-the-command-line

==== Python =====
sudo apt install python3-pip

======== Conan ===========
sudo pip3 install conan

FIX CMAKE NOT DOWNLOADING HTTPS: https://github.com/libigl/libigl/issues/1019
sudo apt install libcurl4-openssl-dev (or another dev package for cURL with TLS support)
Download cmake source and change to unpacked directory
./bootstrap --system-curl -- -DCMAKE_BUILD_TYPE:STRING=Release
make
make install


----------------------------------------
========== DEPRECATED DEPENDENCIES =====
========= might reintroduce in future ====
-----------------------------------------

======= boost =======
from source
https://stackoverflow.com/questions/12578499/how-to-install-boost-on-ubuntu