Commands #

env #

OLD	NEW	pacman	解释
nix-env -iA nixpkgs.gcc	nix profile install nixpkgs#gcc	pacman -S gcc	安装
nix-env -i gcc-3.3.3	nix profile install nixpkgs/<hash	branch>#gcc	pacman -U /path/to/cache
nix-env -f ~/foo.nix -i ‘.*’	-	makepkg -i foo/PKGBUILD	本地 build
nix-env -f ‘nixpkgs.hello’ -A hello –dry-run	-	-	If you create –dry-run, you can see where it will be installed in /nix/store.
nix-env -uA	nix profile upgrade ‘.*’	pacman -Syu	Upgrade all packages
nix-env -u gcc-3.2.2 –always	-	pacman -U /path/to/lower-version	Downgrade to a specific version.
nix-env -e gcc/nix-env -e	nix profile remove <position	attribute path	store path
nix-env –set-flag (true/false)	-	Writing/removing pacman.conf to NoUpgrade	Pin/Unpin versions of specific packages
nix-env -q	nix profile list	pacman -Qem	List of installed packages (only those installed with nix-env are listed)

nix-env -qas for status

nix-collect-garbage => nix store gc

OLD	NEW	Arch	解釋
nix-collect-garbage -d	nix store gc	pacman -Sc	Delete all but the current generation
nix-collect-garbage –max-freed $((100 1024 1024))	nix store gc –max 1G	paccache -ruk3	Delete until specified capacity is reached

OLD	NEW	Arch	EXPLAIN
nix-build ‘’ -A (firefox	openssl.all	openssl.man)	nix build nixpkgs#hello
nix-build	nix build	Simply run it and it will build default.nix in the directory (nix build is the package set to default in flake.nix)
nix-build –dry-run	nix build –print-out-paths	Get only the store path
nix-build –no-out-link	nix build –no-link	Do not create a link to ./result

COMMAND	EXPLAIN
nix-shell	Isolated environment with dependencies written in default.nix.
nix develop	nix-shell in flake. An environment containing dependencies written in .mkShell { buildInputs = [ any pkgs ]; }. To check the build procedure.
nix shell	This will enter an environment where the path is to the package built with the contents written in stdenv.mkDerivation. For checking products and creating an isolated environment.
nix run	Executing the binary. Just build and run.

OLD	NEW	EXPLAIN
nix-shell	nix develop	Enter the interactive environment where the path is passed to the dependencies listed in default.nix (nix develop is flake.nix). nix develop configurePhasecan run predefined commands such as (nix-shell is also possible)
nix-shell ‘’ -A bash –run “command”	nix shell nixpkgs#bash -c “command”	Build the package and run commands in a non-interactive environment

                                          | nix develop (--unpack|--configure|...|--(eachPhase)     | Executes the specified Phase.

COMMAND	EXPLAIN
nix flake check	Build check. You can check only the build of the target package with nixpkgs#bash or .#foo.
nix flake check –no-build	Evaluation of only nix expressions
nix flake clone	Clone a repository containing flake
nix flake info	Repository description
nix flake init -t template#full	Create a flake repository according to the template. There is no need to specify a template
nix flake new -t template#full /path/to/output	Create a flake repository in the specified directory
nix flake show	Output of packages in repository
nix flake update	Update flake.lock

command	explain
nixos-rebuild switch -p profilename –flake .#target	After building and passing through the target nix expression, enter the updated environment. Updates that require a reboot will not be reflected. -p allows you to specify a profile name (displayed at boot time).
nixos-rebuild boot …	It even builds using the nix expression for target. You can enter that environment by selecting it the next time you boot.
nixos-rebuild test …	A version that is not registered in the nix-rebuild switch bootloader.
nixos-rebuild dry-build …	just build
nixos-rebuild build-vm …	Build an environment on the VM.

command	explain
home-manager build –flake .#target	Building the user environment
home-manager switch …	User environment switch
home-manager generations …	User environment generation list
home-manager remove-generations ID	Delete specific generation