feat: nixos module

default.nix

@@ -33,8 +33,8 @@ let
   ];
 
   doerg-config = writeText "doerg-extra-config.edn" ''
-    #:net.deertopia.doerg
-    {:ibm-plex-web "${ibm-plex-web}"
+    #:net.deertopia.doerg.config
+    {:ibm-plex-web "${ibm-plex-web}/share/ibm-plex-web"
      :latex "${lib.getExe' our-tex "xelatex"}"
      :dvisvgm "${lib.getExe' our-tex "dvisvgm"}"
      :doerg-temml-worker "${lib.getExe doerg-temml-worker}"
@@ -43,15 +43,21 @@ let
 in mkCljBin' {
   name = "net.deertopia/doerg";
   version = "0.1.0";
-  projectSrc = lib.cleanSource ./.;
+  projectSrc = lib.cleanSourceWith {
+    filter = path: type:
+      lib.sources.cleanSourceFilter path type
+      || lib.hasSuffix ".nix" path;
+    src = ./.;
+  };
   lockfile = ./deps-lock.json;
   main-ns = "net.deertopia.doerg.main";
   nativeBuildInputs = [
     plex
     makeWrapper
   ];
-  buildInputs = [
+  propagatedBuildInputs = [
     doerg-parser
+    ibm-plex-web
     doerg-temml-worker
     plex
     our-tex
@@ -73,5 +79,6 @@ in mkCljBin' {
       XDG_STATE_HOME=$(mktemp -d "state-home-XXXXXX")
     clojure -M:test
   '';
-  passthru = { inherit plex our-tex test-emacs; };
+  passthru = { inherit plex our-tex test-emacs doerg-config; };
+  meta.mainProgram = "doerg";
 }

dev/user.clj

@@ -0,0 +1,17 @@
+(ns user
+  (:require [net.deertopia.doerg.server :as server]
+            [net.deertopia.doerg.config :as cfg]
+            [net.deertopia.doerg.cached-file :as cached-file]
+            [babashka.fs :as fs]))
+
+(cfg/load-config! :profile :dev)
+
+(when (not= :running (server/status))
+  (server/start!))
+
+(defn invalidate-html-cache! []
+  (fs/delete-tree (server/html-dir))
+  nil)
+
+(defn toggle-html-cache! []
+  (alter-var-root #'cached-file/*use-cache?* not))

flake.nix

@@ -14,12 +14,15 @@
         "x86_64-linux"
       ];
 
+      overlays = [
+        inputs.sydpkgs.overlays.default
+        clj-nix.overlays.default
+      ];
+
       each-system = f: nixpkgs.lib.genAttrs supportedSystems (system: f rec {
         pkgs = import nixpkgs {
           inherit system;
-          overlays = [
-            inputs.sydpkgs.overlays.default
-            clj-nix.overlays.default
+          overlays = overlays ++ [
             self.overlays.default
           ];
         };
@@ -36,13 +39,17 @@
       });
 
       overlays.default = final: prev:
-        let graal = x: final.mkGraalBin { cljDrv = x; };
+        let
+          # is this really the correct way to satisfy our
+          # dependencies? lmfao
+          final' = final.appendOverlays overlays;
+          graal = x: final'.mkGraalBin { cljDrv = x; };
         in {
-          ibm-plex-web = final.callPackage ./ibm-plex-web.nix {};
-          doerg = final.callPackage ./. {};
-          doerg-parser = final.callPackage ./doerg-parser {};
-          doerg-temml-worker = final.callPackage ./doerg-temml-worker {};
-          our-tex = final.callPackage ./our-tex.nix {};
+          ibm-plex-web = final'.callPackage ./ibm-plex-web.nix {};
+          doerg = final'.callPackage ./. {};
+          doerg-parser = final'.callPackage ./doerg-parser {};
+          doerg-temml-worker = final'.callPackage ./doerg-temml-worker {};
+          our-tex = final'.callPackage ./our-tex.nix {};
         };
 
       checks = each-system ({ pkgs, system, ... }: {
@@ -52,6 +59,8 @@
             (pkgs.lib.attrValues self.packages.${system});
       });
 
+      nixosModules.default = import ./module.nix { inherit self; };
+
       devShells = each-system ({ pkgs, system, ... }: {
         default = pkgs.mkShell {
           inputsFrom = [

module.nix

@@ -0,0 +1,107 @@
+{ self, ... }:
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.services.doerg;
+  doerg-config = pkgs.writeText "doerg-config.edn" ''
+    #:net.deertopia.doerg.config
+    {:org-roam-db-path "${cfg.databasePath}"
+     :state-directory "${cfg.stateDir}"
+     :port ${builtins.toString cfg.port}}
+  '';
+
+  inherit (lib) types;
+
+  org-roam-db-sync = pkgs.writeText "org-roam-db-sync.el" ''
+    #!/usr/bin/env -S emacs -Q -x
+    
+    (require 'org-roam)
+    
+    (setq org-roam-directory (expand-file-name (car command-line-args-left)))
+    (setq org-roam-db-location (expand-file-name (cadr command-line-args-left)))
+    
+    (org-roam-db-sync)
+  '';
+in {
+  options.services.doerg = {
+    enable = lib.mkEnableOption "Doerg";
+    org-roam-db-sync.enable = lib.mkEnableOption "Org-roam db sync";
+    port = lib.mkOption {
+      default = 21984;
+      type = lib.types.port;
+      description = ''
+        The port on which Doerg will listen.
+      '';
+    };
+    stateDir = lib.mkOption {
+      type = types.path;
+      default = "/var/lib/private/doerg";
+      description = "Daemon's state directory.";
+    };
+    orgDir = lib.mkOption {
+      type = types.path;
+      description = "Org roam directory.";
+    };
+    package = lib.mkPackageOption pkgs "doerg" {};
+    databasePath = lib.mkOption {
+      type = types.path;
+      description = "Org roam database path";
+      default = cfg.orgDir + "org-roam.db";
+    };
+    openFirewall = lib.mkOption {
+      type = types.bool;
+      description = "Open doerg ports?";
+      default = false;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    nixpkgs.overlays = [ self.overlays.default ];
+
+    systemd.services.org-roam-db-sync = lib.mkIf cfg.org-roam-db-sync.enable {
+      script = lib.escapeShellArgs [
+        (lib.getExe cfg.package.test-emacs)
+        "-Q" "-x" org-roam-db-sync cfg.orgDir cfg.databasePath
+      ];
+      serviceConfig = {
+        Type = "oneshot";
+        ReadOnlyBindPaths = [
+          cfg.orgDir
+        ];
+      };
+    };
+
+    systemd.timers.org-roam-db-sync = lib.mkIf cfg.org-roam-db-sync.enable {
+      unitConfig.StopWhenUnneeded = true;
+      timerConfig = {
+        OnActiveSec = "1h";
+        RandomizedDelaySec = "30m";
+        Persistent = true;
+      };
+    };
+
+    networking.firewall.allowedTCPPorts = lib.mkIf cfg.openFirewall [
+      cfg.port
+    ];
+
+    systemd.services.doerg = {
+      after = [ "network-online.target" ];
+      wants = [ "network-online.target" "org-roam-db-sync.timer" ];
+      wantedBy = [ "multi-user.target" ];
+      environment.DOERG_CONFIG = doerg-config;
+      serviceConfig = {
+        # WorkingDirectory = cfg.stateDir;
+        StateDirectory = "doerg";
+        ExecStart = lib.getExe cfg.package;
+        DynamicUser = true;
+        ProtectSystem = "strict";
+        PrivateTmp = true;
+        BindReadOnlyPaths = [
+          cfg.orgDir
+          # cfg.databasePath
+          "/nix"
+        ];
+      };
+    };
+  };
+}

resources/net/deertopia/doerg/default-config.edn

@@ -1,6 +1,6 @@
 #:net.deertopia.doerg.config
-{:ibm-plex-web #or [#xdg-data-dir "ibm-plex-web"
-                    #env IBM_PLEX_WEB]
+{:ibm-plex-web #or [#env IBM_PLEX_WEB
+                    #xdg-data-dir "ibm-plex-web"]
  :latex "xelatex"
  :dvisvgm "dvisvgm"
  :doerg-temml-worker

src/net/deertopia/doerg/cached_file.clj

@@ -18,8 +18,10 @@
   calling `compute` with no arguments only if stale? is logical true."
   [& {:keys [file stale? compute]}]
   (when (or (not *use-cache?*) stale?)
-    (let [r (compute)]
+    (let [r (compute)
+          dir (fs/parent file)]
       (assert (string? r))
-      (fs/create-dirs (fs/parent file))
+      (when-not (fs/exists? dir)
+        (fs/create-dirs dir))
       (spit file r)))
   file)

src/net/deertopia/doerg/config.clj

@@ -46,7 +46,8 @@
   "Aero tag to search for a directory on $XDG_DATA_DIRS."
   (some #(let [x (fs/path % value)]
            (and (fs/exists? x) x))
-        (fs/split-paths (System/getenv "XDG_DATA_DIRS"))))
+        (some-> (System/getenv "XDG_DATA_DIRS")
+                fs/split-paths)))
 
 (defmethod aero/reader 'file
   [{:keys [source]} tag value]
@@ -66,9 +67,6 @@
       (throw (ex-info "Failed to conform config"
                       (s/explain-data ::config r))))))
 
-(defn load-config! [var spec files & {:as opts}]
-  (alter-var-root var (constantly (read-config files opts))))
-
 (def sources
   [;; Default config.
    (io/resource "net/deertopia/doerg/default-config.edn")
@@ -80,3 +78,10 @@
 (def default (read-config sources))
 
 (def ^:dynamic *cfg* default)
+
+(defn load-config!
+  ([& {:as opts :keys [files]
+       :or {files sources}}]
+   (let [passthru-opts (-> opts (dissoc :files))]
+     (alter-var-root
+      #'*cfg* (constantly (read-config files passthru-opts))))))

src/net/deertopia/doerg/element.clj

@@ -4,7 +4,6 @@
             [babashka.process :as p]
             [cheshire.core :as json]
             [clojure.core.match :refer [match]]
-            [net.deertopia.doerg :as-alias doerg]
             [clojure.java.io :as io]
             [clojure.set :as set]
             [clojure.string :as str]
@@ -35,7 +34,7 @@
                  :or {in *in*}}]
   (let [r (-> (p/process
                {:in in :out :string}
-               (-> cfg/*cfg* ::doerg/doerg-parser str))
+               (-> cfg/*cfg* ::cfg/doerg-parser str))
               (common/deref-with-timeout *uniorg-timeout-duration*))]
     (when (zero? (:exit r))
       (-> r :out (json/parse-string (comp keyword camel->kebab))))))

src/net/deertopia/doerg/main.clj

@@ -1,5 +1,8 @@
 (ns net.deertopia.doerg.main
+  (:require [net.deertopia.doerg.server :as server]
+            [net.deertopia.doerg.config :as cfg])
   (:gen-class))
 
-(defn -main []
-  (println "hello from doerg"))
+(defn -main [& _]
+  (binding [cfg/*cfg* (cfg/read-config cfg/sources)]
+    (server/start!)))

src/net/deertopia/doerg/render.clj

@@ -63,16 +63,19 @@
 
 (defn org-document
   "Recursively render an Org-mode document to Hiccup."
-  [doc & {:as opts :keys [postamble]}]
+  [doc & {:as opts :keys [postamble header title]}]
   (binding [*opts* opts]
     (tex-temml/binding-worker
       (let [rendered (-> doc gather-footnotes render-tex-snippets
                          org-element-recursive)]
         [:html
          [:head
-          [:title "org document"]
+          (when title
+            [:title title])
           doerg-html/head]
          [:body {:lang default-language}
+          (when header
+            [:header header])
           [:article
            rendered
            (when postamble
@@ -273,11 +276,14 @@
 (defmethod org-element "bold" [{:keys [children]}]
   [:b children])
 
+(defmethod org-element "strike-through" [{:keys [children]}]
+  [:s children])
+
 (defmethod org-element "subscript" [{:keys [children]}]
   [:sub children])
 
 (defmethod org-element "superscript" [{:keys [children]}]
-  [:super children])
+  [:sup children])
 
 (defmethod org-element "italic" [{:keys [children]}]
   [:em children])
@@ -382,9 +388,18 @@
 (defmethod org-keyword "TITLE" [{:keys [value]}]
   [:h1 value])
 
+(defmethod org-keyword "SUBTITLE" [{:keys [value]}]
+  [:p.subtitle value])
+
 (defmethod org-keyword "LATEX_COMPILER" [_] nil)
 (defmethod org-keyword "LATEX_HEADER" [_] nil)
 
+;; TODO: A bunch of things I'd rather hide for now, but should be
+;; implemented eventually.
+(defmethod org-keyword "FILETAGS" [_] nil)
+(defmethod org-element "planning" [_] nil)
+(defmethod org-element "timestamp" [_] nil)
+
 ;; Not sure how to deal with this one yet.
 (defmethod org-keyword "AUTHOR" [_] nil)
 

src/net/deertopia/doerg/repl.clj

@@ -35,7 +35,7 @@
     (fs/create-dirs dest)
     (fs/create-dirs resource-dir)
     (force-create-sym-link (fs/file resource-dir "ibm-plex-web")
-                           (-> cfg/*cfg* ::doerg/ibm-plex-web))
+                           (-> cfg/*cfg* ::cfg/ibm-plex-web))
     (doseq [x #{"Temml-Plex.css" "tuftesque.css" "deerstar.css"}]
       (force-create-sym-link
        (fs/file resource-dir x)

src/net/deertopia/doerg/roam.clj

@@ -133,11 +133,15 @@
         elisp/read-alist)))
 
 (defn public? [node]
-  (-> node properties (get "DEERTOPIAVISIBILITY") (= "public")))
+  (some-> (properties node) (get "DEERTOPIAVISIBILITY") (= "public")))
+
+(defn get-public-node [node]
+  (when-let [n (get-node node)]
+    (when (public? n) n)))
 
 (defn graph-visible? [node]
   (#{"public" "graphonly"}
-   (-> node properties (get "DEERTOPIAVISIBILITY"))))
+   (some-> (properties node) (get "DEERTOPIAVISIBILITY"))))
 
 (defn backlinks
   "Returns a collection of nodes linking to `node`."
@@ -149,7 +153,8 @@
                              where links.dest = ?"
                             (elisp/print (str (:id node)))])
         :let [id' (elisp/read-string id)]
-        :when (-> id' parse-uuid get-node public?)]
+        :when (some-> (-> id' parse-uuid get-node)
+                      public?)]
     (make-node id' {:title (elisp/read-string title)})))
 
 

src/net/deertopia/doerg/server.clj

@@ -23,9 +23,7 @@
             [net.deertopia.doerg.cached-file :as cached-file]
             [babashka.fs :as fs]
             [aero.core :as aero]
-            [clojure.string :as str]
-            [net.deertopia.doerg :as-alias doerg]
-            [net.deertopia.doerg.config :as doerg-config]))
+            [clojure.string :as str]))
 
 
 ;;; Routes
@@ -51,8 +49,13 @@
 (defn html-dir []
   (-> cfg/*cfg* ::cfg/state-directory (fs/file "html")))
 
-(defn not-found [req]
-  (response/not-found "not found"))
+(declare node-by-slug)
+
+;; This could infinitely loop if the 404 page can't be found. lmfao.
+(defn not-found [_req]
+  (-> (node-by-slug {:path-params {:slug not-found-slug}})
+      (assoc :status 404))
+  #_(response/not-found "not found"))
 
 (defn org-file->html-file [org-file]
   (fs/file (html-dir)
@@ -73,17 +76,34 @@
    #_[:a {:href (str "/n/" (slug/from-uuid path))}
     (or (seq children) raw-link)]])
 
+(def navbar
+  "Hiccup element for Deertopia.net's navbar."
+  [:nav.navbar
+   [:ol.navbar-list
+    [:li
+     [:a.home-link {:href "/"}
+      "🦌 deertopia.net"]]
+    #_[:li
+     [:a.home-link {:href "/graph"}
+      "graph"]]
+    #_
+    [:li
+     [:a.home-link {:onclick "alert('unimplemented }:(')"}
+      "search"]]]])
+
 (defn backlinks-postamble [node]
-  [:section#backlinks
-   [:h2 "Backlinks"]
-   [:ul
-    (for [n (->> (roam/backlinks node)
-                 (sort-by (comp str/lower-case roam/title)))]
-      [:li (slug-link (roam/slug n)
-                      (roam/title n))])]])
+  (let [backlinks (roam/backlinks node)]
+    (when-not (empty? backlinks)
+      [:section#backlinks
+       [:h2 "Backlinks"]
+       [:ul
+        (for [n (->> backlinks
+                     (sort-by (comp str/lower-case roam/title)))]
+          [:li (slug-link (roam/slug n)
+                          (roam/title n))])]])))
 
 (defn node-by-slug [{{:keys [slug]} :path-params :as req}]
-  (if-some [node (some-> slug slug/from-string roam/get-node)]
+  (if-some [node (some-> slug slug/from-string roam/get-public-node)]
     (let [org-file (roam/org-file node)
           html-file (org-file->html-file org-file)]
       (cached-file/cached-file
@@ -91,7 +111,9 @@
        :stale? (cached-file/newer-than? org-file html-file)
        :compute #(doerg-render/to-html
                   org-file
-                  :postamble (backlinks-postamble node)))
+                  :postamble (backlinks-postamble node)
+                  :header navbar
+                  :title (roam/title node)))
       (-> (str html-file)
           response/file-response
           (response/content-type "text/html")))
@@ -118,7 +140,7 @@
   (if-some [[_ resource] (re-matches #"^/resource/ibm-plex-web/(.*)" uri)]
     (-> resource
         (response/file-response
-         {:root (-> doerg-config/*cfg* ::doerg/ibm-plex-web str)}))
+         {:root (-> cfg/*cfg* ::cfg/ibm-plex-web str)}))
     (-> uri
         (str/replace-first #"^/resource/" "")
         (response/resource-response

src/net/deertopia/doerg/tex/native.clj

@@ -83,14 +83,14 @@
         acc))))
 
 (defn- invoke-latex [& {:keys [file output-dir]}]
-  (let [latex (-> cfg/*cfg* ::doerg/latex)]
+  (let [latex (-> cfg/*cfg* ::cfg/latex)]
     (invoke
      {:dir output-dir}
      latex "-no-pdf" "-interaction" "nonstopmode"
      "-output-directory" output-dir file)))
 
 (defn- invoke-dvisvgm [& {:keys [file output-dir]}]
-  (let [dvisvgm (-> cfg/*cfg* ::doerg/dvisvgm)]
+  (let [dvisvgm (-> cfg/*cfg* ::cfg/dvisvgm)]
     (invoke
      {:dir output-dir}
      dvisvgm "--page=1-" "--optimize" "--clipjoin"

src/net/deertopia/doerg/tex/temml.clj

@@ -25,7 +25,7 @@
       fs/file))
 
 (defn worker []
-  (let [doerg-temml-worker (-> cfg/*cfg* ::doerg/doerg-temml-worker)]
+  (let [doerg-temml-worker (-> cfg/*cfg* ::cfg/doerg-temml-worker)]
     (when (or (not (fs/exists? prelude-file))
               (zero? (fs/size prelude-file)))
       (-> "net/deertopia/doerg/prelude.tex"