html.nix/pkgs-lib.nix

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{ utils, pkgs }:
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let
pkgBin = name: "${pkgs.${name}}/bin/${name}";
mkServePathScript = path: pkgs.writeScriptBin "serve" ''
#!${pkgs.stdenv.shell}
${pkgBin "miniserve"} --index index.html ${path}
'';
mkSitePath = site:
let
inherit (utils) recursiveAttrPaths concatStringsSep map;
inherit (pkgs.lib) mapAttrsRecursive init last getAttrFromPath;
fileAttrPaths = recursiveAttrPaths site;
texts = mapAttrsRecursive (path: value: pkgs.writeText (concatStringsSep "-" path) value) site;
mkCreateFileCmd = path: value: let p = concatStringsSep "/" (init path); in "mkdir -p $out/${p} && ln -s ${value} $out/${p}/${last path}";
createFileCmds = map (path: mkCreateFileCmd path (getAttrFromPath path texts)) fileAttrPaths;
in
pkgs.runCommand "site-path" { } ''
mkdir -p $out
${concatStringsSep "\n" createFileCmds}
'';
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parseMarkdown = name: contents:
pkgs.runCommand name { } ''
printf "${contents}" | ${pkgBin "lowdown"} -o $out -
'';
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in
{
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inherit mkServePathScript mkSitePath parseMarkdown;
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mkServeFromSite = site: mkServePathScript (mkSitePath site);
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mkSiteFrom = { src, templater }:
let
inherit (utils) readDir readFile fromTOML;
inherit (pkgs.lib) mapAttrs' nameValuePair head splitString;
postsRendered =
let path = src + "/posts"; in
mapAttrs'
(name: _:
nameValuePair
(head (splitString "." name))
(parseMarkdown name (readFile (path + "/${name}")))
)
(readDir path);
siteConfig = fromTOML (readFile (src + "/config.toml"));
context = {
inherit utils pkgs;
config = siteConfig;
posts = postsRendered;
};
in
templater context;
}