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README.md: further refinements
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Timothy DeHerrera
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README.md
70
README.md
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@ -21,8 +21,8 @@ git checkout -b $new_branch template
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nixos-generate-config --show-hardware-config > ./hosts/${new_host}.nix
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# wrapper for `nix build` bypassing `nixos-rebuild`
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# Usage: rebuild [([host] {switch|boot|test|dry-activate})|iso]
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# `rebuild` wrapper for `nix build` bypassing `nixos-rebuild`
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# Usage: rebuild [host] {switch|boot|test|dry-activate}
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# You can specify any of the host configurations living in the ./hosts
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# directory. If omitted, it will default to your systems current hostname.
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@ -32,7 +32,7 @@ rebuild $new_host switch
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And now you should be ready to start writing your nix configuration or import
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your current one. Review [structure](#structure) below on how to build your
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your current one. Review the [structure](#structure) below on how to build your
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layout. And be sure to update the [locale.nix](local/locale.nix) for your
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region.
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@ -49,7 +49,7 @@ rebuild iso
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nix profile install ".#packages.x86_64-linux.myPackage"
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```
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this flake exports overlays and modules as well:
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this flake exports multiple outputs for use in other flakes:
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```nix
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# external flake.nix
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{
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@ -58,6 +58,8 @@ this flake exports overlays and modules as well:
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outputs = { self, nixpkgs, nixflk }: {
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nixosConfigurations.newConfig = nixflk.nixosConfigurations.someConfig;
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nixosConfigurations.myConfig = nixpkgs.lib.nixosSystem {
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system = "x86_64-linux";
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modules = [
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@ -74,40 +76,42 @@ this flake exports overlays and modules as well:
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The structure is here to keep things simple and clean. Anything sufficiently
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generic can ultimately be exported for use in other flakes without getting
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tied up in user concerns. An additional bonus of is the ability to trivially
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swap or combine [profiles](#profiles).
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tied up in user concerns. As an added bonus, one can now trivially swap or
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combine [profiles](#profiles), creating a custom config in mere moments.
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## Hosts
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Distributions for particular machines should be stored in the [hosts](hosts)
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directory. Every file in this directory will be added automatically to the
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the `nixosConfigurations` flake output and thus deployable. See the
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the `nixosConfigurations` flake output and thus becomes deployable. See the
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[`default.nix`](hosts/default.nix) for the implementation details.
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## Profiles
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More abstract expressions suitable for reuse by deployments should live in the
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[profiles](profiles) directory. A distinction is made between a module and
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profile, in that a profile is simply a regular NixOS module, without any _new_
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option declarations.
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A profile is any directory under [profiles](profiles) containing a `default.nix`
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defining a valid NixOS module, _with_ the added restriction that no new
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delclarations to the `options` attribute are allowed (use [modules](modules)
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instead). Their purpose is to provide abstract expressions suitable for reuse by
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multiple deployments. They are perhaps _the_ key concept in keeping this
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repository matainable.
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Every directory here is a profile and should have a `default.nix` to import it.
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Profiles can have subprofiles which are just subdirectories with a `default.nix`.
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There's no hard rule that everything in the folder must be imported by its
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`default.nix` so you can also store relevant configurations that may not be used
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as often and just import them directly from a [host](#hosts) when needed.
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Profiles can have subprofiles which are themselves just profiles that live under
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another. There's no hard rule that everything in the folder must be imported by
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its `default.nix`, so you can also store relevant code that is useful but not
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wanted by default in, say, an `alt.nix`. Importantly, every subdirectory in a
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profile should be independent of its parent.
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Importantly, every subdirectory in a profile should be independently importable.
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For example, a zsh directory lives under [profiles/develop](profiles/develop/zsh).
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It's written in a generic way to allow in to be imported without the entire
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It's self contained to allow inclusion without the whole of
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[develop](profiles/develop) if one so wished. This provides a wonderful level of
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granularity.
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granularity and control. Put simply: take the best, leave the rest.
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In addition, profiles can depend on other profiles. For example, The
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In addition, profiles can depend on other profiles. For instance, the
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[graphical](profiles/graphical) profile depends on [develop](profiles/develop)
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simply by importing it in its [`default.nix`](profiles/graphical/default.nix).
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simply by importing it. This is to ensure my terminal configuration is always
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available from within a graphical session.
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You can, optionally, choose to export your profiles via the flake output. If
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you add it to the list in [profiles/default.nix](profiles/default.nix), then it
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will become available to other flakes via `nixosModules.profiles.<filename>`.
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Optionally, you may choose to export your profiles via the flake output. If
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you include it in the list defined in [profiles/default.nix](profiles/default.nix),
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it will be available to other flakes via `nixosModules.profiles`.
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## Users
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User declaration belongs in the `users` directory. Everything related to
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@ -125,17 +129,19 @@ if your not familiar. The filter is already set up to encrypt everything in this
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folder by default.
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To keep [profiles](profiles) reusable across configurations, secrets should
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only be imported from the `users` directory.
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only be imported from the `users` or [`hosts`](hosts) directory.
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## Modules and Packages
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All [modules](modules/default.nix) and [pkgs](pkgs/default.nix) are available
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for every configuration automatically. Simply add an expression to one of
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these directories declaring your module or package, and update the
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corresponding `default.nix` to point to it. Now you can use your new module or
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install your new package as usual from any profile.
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All expressions in both [modules/defualt.nix](modules/default.nix) and
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[pkgs/default.nix](pkgs/default.nix) are available globally, anywhere else in the
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repo. They are additionally included in the `nixosModules` or `overlays` flake
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outputs. Packages can manually be added to [flake.nix](flake.nix) for inclusion
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in the `packages` output as well.
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Doing this will also add them to the flake's `nixosModules` or `overlays`
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outputs to import them easily into an external NixOS configuration as well.
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The directory structure is identical to nixpkgs to provide a kind of staging area
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for any modules or packages we might be wanting to merge there later. If your not
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familiar or can't be bothered, simply dropping a valid nix file and pointing the
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`default.nix` to it, is all that's really required.
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# License
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