Installation

Clone the repo into the home directory:

cd
mkdir -p repos/abc-valera
cd repos/abc-valera
nix-shell -p git
git clone https://github.com/abc-valera/config-nixos.git

If using NixOS, copy the hardware configuration from /etc/nixos into src/cmd/nixos/hardware/<machine-name> if it doesn't already exist. The /etc/nixos directory can then be removed entirely:

sudo rm -r /etc/nixos

Then apply the configuration (replace wsl or elitebook25 with the target host):

# WSL
sudo nixos-rebuild switch --flake ~/repos/abc-valera/config-nixos#wsl

# Bare metal
sudo nixos-rebuild switch --flake ~/repos/abc-valera/config-nixos#elitebook25

On the first run, Nix will create a flake.lock file pinning all input versions.

Updating inputs

To update all flake inputs to their latest versions and rebuild:

sudo nix flake update --flake ~/repos/abc-valera/config-nixos
sudo nixos-rebuild switch --flake ~/repos/abc-valera/config-nixos#<host>

To update a single input (e.g. only nixpkgs-unstable):

sudo nix flake update nixpkgs-unstable --flake ~/repos/abc-valera/config-nixos
sudo nixos-rebuild switch --flake ~/repos/abc-valera/config-nixos#<host>

Updating to a next major system version

Edit the versions for the inputs in flake.nix to match the new release (e.g. bump 26.05 → 26.11). Then run:

sudo nix flake update --flake ~/repos/abc-valera/config-nixos
sudo nixos-rebuild switch --flake ~/repos/abc-valera/config-nixos#<host>

Other useful commands

SSH keys can be generated via:

ssh-keygen -t ed25519 -C "valeriy.tymofieiev@gmail.com" -f /home/abc-valera/.ssh/id_ed_personal

To manually run garbage collector:

sudo nix-collect-garbage -d

To cleanup docker data:

docker system prune -a --volumes -f
docker builder prune -a -f

To check the disk usage:

df -h

Shell Shortcuts

Moving:

• ctrl-a moves the cursor to the beginning of the line.

• ctrl-e moves to the end of line. If the cursor is already at the end of the line, and an autosuggestion is available, accepts the autosuggestion.

• alt-b and alt-f move the cursor one word left or right, or accept one word of the autosuggestion. If the command line is empty, moves forward/backward in the directory history instead.

• ctrl-b and ctrl-f move the cursor one character left or right or accept the autosuggestion

Completion:

• tab / ctrl-i completes the current token
• shift-tab completes the current token and starts the pager’s search mode
• alt-f accepts the first argument/word of the autosuggestion
• ctrl-e accepts the full autosuggestion
• alt-b / alt-f accept one word of the autosuggestion

Editing:

• ctrl-u removes contents from the beginning of line to the cursor (moving it to the kill ring).

• ctrl-k deletes from the cursor to the end of line (moving it to the kill ring).

• ctrl-w removes the previous path component (everything up to the previous “/”, “:” or “@”) (moving it to the kill ring).

• alt-d moves the next word to the kill ring.

• ctrl-d deletes one character to the right of the cursor. If the command line is empty, ctrl-d will exit fish.

• ctrl-h removes one character forwards or backwards respectively.

• alt-s Prepends sudo to the current commandline. If the commandline is empty, prepend sudo to the last commandline.

• alt-enter inserts a newline at the cursor position. This is useful to add a line to a commandline that’s already complete.

• ctrl-shift-z reverts the most recent undo.

• ctrl-z undo the most recent edit of the line.

• alt-p adds the string &| less; to the end of the job under the cursor. The result is that the output of the command will be paged.

Clipboard:

• ctrl-v inserts the clipboard contents
• ctrl-x copies the current buffer to the system’s clipboard

History:

• ctrl-r opens the history in a pager. This will show history entries matching the search, a few at a time. Pressing ctrl-r again will search older entries, pressing ctrl-s (that otherwise toggles pager search) will go to newer entries. The search bar will always be selected.

• ctrl-p and ctrl-n search the command history for the previous/next command containing the string that was specified on the commandline before the search was started. If the commandline was empty when the search started, all commands match.

• shift-delete removes the current history item or autosuggestion from the command history.

Current folder listing:

• alt-l lists the contents of the current directory, unless the cursor is over a directory argument, in which case the contents of that directory will be listed.

• alt-d lists the directory history if the command line is empty.

Execute:

• enter executes the current commandline or inserts a newline if it’s not complete yet (e.g. a ) or end is missing).
• ctrl-c interrupts/kills whatever is running (SIGINT).

Editor:

• alt-e / alt-v edits the current command line in an external editor.
• alt-o opens the file at the cursor in a pager. If the cursor is in command position and the command is a script, it will instead open that script in your editor.

Other:

• alt-w prints a short description of the command under the cursor.

• alt-h shows the manual page for the current command, if one exists.

• ctrl-l pushes any text above the prompt to the terminal’s scrollback, then clears and repaints the screen.

Resources

https://nix-community.github.io/NixOS-WSL