notes-nixos.txt

# download configurations
nix-shell -p git
git clone https://github.com/perlinm/nix ~/nix
# later: git remote set-url origin git@github.com:perlinm/nix

# NOTE: fix ~/nix/luks.nix if necessary
# The value of luks-swap-uuid can be found in /etc/nixos/configuration.nix,
# or as 'luks-<THIS-SUBSTRING>:' in the output of 'blkid | grep swap'.
# If there is no LUKS encryption, then 'echo {} > ~/nix/luks.nix' will suffice.

# copy and symlink config files
cd ~/nix
sudo cp flake.nix flake.lock nixos.nix luks.nix sway-fixes.nix /etc/nixos

mkdir -p ~/.config/home-manager
ln -sf ~/nix/flake.nix ~/.config/home-manager

# install everything!
sudo nixos-rebuild switch --flake /etc/nixos#map-work
home-manager switch

# TODO: set firefox configs elsewhere
# in firefox, 'about:config':
# browser.quitShortcut.disabled: set to true to disable exiting with ctrl+q
# browser.low_commit_space_threshold_percent: set to (say) 30 to decrease memory usage
# accessibility.typeaheadfind.enablesound: set to false to disable bell/warning sounds
# permissions.default.shortcuts: set to 2 to disable websites capturing keyboard shortcuts
# pdfjs.sidebarViewOnLoad: set to 0 to prevent sidebar from opening automatically for PDFs

# set up identity
gpg --decrypt ~/.ssh/id_rsa.gpg > ~/.ssh/id_rsa
chmod 0600 ~/.ssh/id_rsa

# for Overleaf <--> git integration:
gpg --decrypt ~/nix/dotfiles/.git-credentials.gpg > ~/.git-credentials

# backup!!!
rsync -avP --exclude '.conda' --exclude '.cache' /home/perlinm /run/media/perlinm/backup

##################################################
# sharing files over a local network

# woof is an awesome tool for sharing files over a local network
# however, nixos has a firewall enabled by default
# to open port 8080 (or a range of ports, such as 8000:9000) for the local network, run
sudo iptables -A INPUT -p tcp -j ACCEPT --dport 8080
sudo systemctl reload firewall

# you can how share files with:
woof <file>  # <-- prints url
wget <url>   # <-- on other machine

# to open an ad-hoc server for file sharing on port 8080
python -m http.server 8080

##################################################
# conda / python

conda-shell
conda-install
conda update conda python

# disable pip installing in the base environment
pip uninstall pip

# for jupyter notebooks (in an environment):
pip install jupyter ipykernel

# creating and deleting environments
conda create --name <VENV-NAME> python=3.<VERSION>
conda env remove --name <VENV-NAME>

# WARNING: some package installations may fail due to dependencies external to python.
# In this case, these packages should be installed after calling 'conda-shell'.

# For example, if you get the error:
#   ERROR: Failed building wheel for mpi4py
# this can be fixed with
conda install -c conda-forge mpi4py openmpi

# Other standard packages/libraries can likewise be installed with
conda install -c conda-forge <PACKAGE>

# To enable activating virtual environments, call 'conda init', which requires
# '~/."$SHELL"rc' to be writable.  In practice, I prefer inspecting how 'conda init'
# modifies '~/."$SHELL"rc', and enabling virtual environments 'manually'.

##################################################
# julia

# add julia kernel for Jupyter notebooks:
julia -e 'import Pkg; Pkg.add("IJulia")'

# julia formatter:
julia -e 'import Pkg; Pkg.add("JuliaFormatter")'

# activate julia environment:
import Pkg; Pkg.activate("MyEnvironment")