phundrak
a2b21feacc
Configuration is now held by the `.org` files. All `.nix` files are tangled from the org-mode files.
82 lines
2.9 KiB
Org Mode
82 lines
2.9 KiB
Org Mode
#+title: Nix Configuration
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#+setupfile: headers
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#+property: header-args:emacs-lisp :lexical t :exports none :tangle no
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* Nix Configuration
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Something that I want to enable everywhere is, first and foremost, the
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support for Nix commands and Nix flakes. I also want to make sure I
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can use some caches, also known as substituters, including one of mine
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from Cachix, to avoid compiling stuff as much as possible.
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So first, here are my caches with their public key.
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#+name: substituters
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| Substituter's URL | Public Key |
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|----------------------------------------------+-------------------------------------------------------------------------|
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| https://phundrak.cachix.org?priority=10 | =phundrak.cachix.org-1:osJAkYO0ioTOPqaQCIXMfIRz1/+YYlVFkup3R2KSexk== |
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| https://nix-community.cachix.org?priority=20 | =nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs== |
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| https://cache.nixos.org?priority=40 | =cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY== |
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#+name: substituters-urls
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#+begin_src emacs-lisp :var subs=substituters :cache yes
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(mapconcat (lambda (sub) (format "\"%s\"" (car sub))) subs "\n")
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#+end_src
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#+RESULTS[99d05698d7e8ca90b34823f4dd4858224be8d007]: substituters-urls
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: "https://phundrak.cachix.org?priority=10"
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: "https://nix-community.cachix.org?priority=20"
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: "https://cache.nixos.org?priority=40"
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#+name: substituters-keys
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#+begin_src emacs-lisp :var subs=substituters :cache yes
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(require 's)
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(mapconcat (lambda (sub) (format "\"%s\""
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(s-chop-prefix "=" (s-chop-suffix "=" (cadr sub)))))
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subs
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"\n")
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#+end_src
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#+RESULTS[6f5e709a7b1c1dd55e4187dfaf8be945138c68ec]: substituters-keys
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: "phundrak.cachix.org-1:osJAkYO0ioTOPqaQCIXMfIRz1/+YYlVFkup3R2KSexk="
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: "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
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: "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
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This results in the following substituters and trusted public keys.
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#+name: config-vars
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#+begin_src nix :noweb yes
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substituters = [
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<<substituters-urls()>>
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];
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trustedPublicKeys = [
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<<substituters-keys()>>
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];
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#+end_src
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Now, we can declare the rest of the file. You’ll see, it repeats
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itself a bit.
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#+begin_src nix :tangle yes
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let
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cacheSettings = rec {
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<<config-vars>>
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commonConf = {
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extra-trusted-public-keys = trustedPublicKeys;
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extra-substituters = substituters;
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extra-experimental-features = ["nix-command" "flakes"];
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http-connections = 128;
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};
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};
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in {
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flake-file.nixConfig = cacheSettings;
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flake.nixConfig = cacheSettings;
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flake.modules.nixos.nix-cache-settings = {
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nix.settings = {
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inherit (cacheSettings) substituters;
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trusted-public-keys = cacheSettings.trustedPublicKeys;
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experimental-features = ["nix-command" "flakes"];
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http-connections = 128;
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};
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};
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}
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#+end_src
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