From 6feffc568ae790a883b9e0509d755e7d9bd82ee1 Mon Sep 17 00:00:00 2001
From: Brian Picciano <mediocregopher@gmail.com>
Date: Sun, 8 Aug 2021 07:57:45 -0600
Subject: refactor how nix derivations are organized and built

---
 default.nix | 170 ++++++++++++++++++++++++++++++------------------------------
 1 file changed, 86 insertions(+), 84 deletions(-)

(limited to 'default.nix')

diff --git a/default.nix b/default.nix
index a713f8a..4352e5c 100644
--- a/default.nix
+++ b/default.nix
@@ -1,84 +1,86 @@
-let
-    utils = (import ./nix) {};
-    pkgs = utils.pkgs;
-    system = utils.system;
-in
-    {config ? ./config.nix}: rec {
-        config = (import ./config.nix);
-
-        static = (import ./static).build;
-
-        srv = (import ./srv).build;
-        srvBin = pkgs.writeScript "mediocregopher-mediocre-blog-srvBin" ''
-            #!/bin/sh
-            exec ${srv}/bin/mediocre-blog \
-                -pow-secret   "${config.powSecret}" \
-                -ml-smtp-addr "${config.mlSMTPAddr}" \
-                -ml-smtp-auth "${config.mlSMTPAuth}" \
-                -data-dir     "${config.dataDir}" \
-                -public-url   "${config.publicURL}" \
-                -static-dir   "${static}" \
-                -listen-proto "${config.listenProto}" \
-                -listen-addr  "${config.listenAddr}"
-        '';
-
-        redisCfg = pkgs.writeText "mediocregopher-mediocre-blog-redisCfg" ''
-            port 0
-            unixsocket ${config.redisListenPath}
-            daemonize no
-            loglevel notice
-            logfile ""
-            appendonly yes
-            appendfilename "appendonly.aof"
-            dir ${config.dataDir}/redis
-        '';
-
-        redisBin = pkgs.writeScript "mediocregopher-mediocre-blog-redisBin" ''
-            #!/bin/sh
-            mkdir -p ${config.dataDir}/redis
-            exec ${pkgs.redis}/bin/redis-server ${redisCfg}
-        '';
-
-        circusCfg = pkgs.writeText "mediocregopher-mediocre-blog-circusCfg" ''
-            [circus]
-            endpoint = tcp://127.0.0.1:0
-            pubsub_endpoint = tcp://127.0.0.1:0
-
-            [watcher:srv]
-            cmd = ${srvBin}
-            numprocesses = 1
-
-            [watcher:redis]
-            cmd = ${redisBin}
-            numprocesses = 1
-        '';
-
-        circusBin = pkgs.writeScript "mediocregopher-mediocre-blog-circusBin" ''
-            exec ${pkgs.circus}/bin/circusd ${circusCfg}
-        '';
-
-        service = pkgs.writeText "mediocregopher-mediocre-blog" ''
-            [Unit]
-            Description=mediocregopher mediocre blog
-            Requires=network.target
-            After=network.target
-
-            [Service]
-            Restart=always
-            RestartSec=1s
-            User=mediocregopher
-            ExecStart=${circusBin}
-
-            [Install]
-            WantedBy=multi-user.target
-        '';
-
-        install = pkgs.writeScript "mediocregopher-mediocre-blog" ''
-                set -e -x
-
-                sudo cp ${service} /etc/systemd/system/mediocregopher-mediocre-blog.service
-                sudo systemctl daemon-reload
-                sudo systemctl enable mediocregopher-mediocre-blog.service
-                sudo systemctl restart mediocregopher-mediocre-blog.service
-        '';
-    }
+{
+
+    pkgs ? import (fetchTarball {
+        name = "nixpkgs-21-05";
+        url = "https://github.com/NixOS/nixpkgs/archive/7e9b0dff974c89e070da1ad85713ff3c20b0ca97.tar.gz";
+        sha256 = "1ckzhh24mgz6jd1xhfgx0i9mijk6xjqxwsshnvq789xsavrmsc36";
+    }) {},
+
+    baseConfig ? import ./config.nix,
+
+}: rec {
+
+    config = baseConfig // {
+        redisListenPath = "${config.runDir}/redis";
+    };
+
+    static = (import ./static) { inherit pkgs; };
+
+    srv = (import ./srv) {
+        inherit pkgs config;
+        staticBuild=static.build;
+    };
+
+    redisCfg = pkgs.writeText "mediocre-blog-redisCfg" ''
+        port 0
+        unixsocket ${config.redisListenPath}
+        daemonize no
+        loglevel notice
+        logfile ""
+        appendonly yes
+        appendfilename "appendonly.aof"
+        dir ${config.dataDir}/redis
+    '';
+
+    redisBin = pkgs.writeScript "mediocre-blog-redisBin" ''
+        #!/bin/sh
+        mkdir -p ${config.dataDir}/redis
+        exec ${pkgs.redis}/bin/redis-server ${redisCfg}
+    '';
+
+    circusCfg = pkgs.writeText "mediocre-blog-circusCfg" ''
+        [circus]
+        endpoint = tcp://127.0.0.1:0
+        pubsub_endpoint = tcp://127.0.0.1:0
+
+        [watcher:srv]
+        cmd = ${srv.bin}
+        numprocesses = 1
+
+        [watcher:redis]
+        cmd = ${redisBin}
+        numprocesses = 1
+    '';
+
+    entrypoint = pkgs.writeScript "mediocre-blog-entrypoint" ''
+        #!/bin/sh
+        mkdir -p ${config.runDir}
+        mkdir -p ${config.dataDir}
+        exec ${pkgs.circus}/bin/circusd ${circusCfg}
+    '';
+
+    service = pkgs.writeText "mediocre-blog" ''
+        [Unit]
+        Description=mediocregopher mediocre blog
+        Requires=network.target
+        After=network.target
+
+        [Service]
+        Restart=always
+        RestartSec=1s
+        User=mediocregopher
+        ExecStart=${entrypoint}
+
+        [Install]
+        WantedBy=multi-user.target
+    '';
+
+    install = pkgs.writeScript "mediocre-blog" ''
+        set -e -x
+
+        sudo cp ${service} /etc/systemd/system/mediocregopher-mediocre-blog.service
+        sudo systemctl daemon-reload
+        sudo systemctl enable mediocregopher-mediocre-blog.service
+        sudo systemctl restart mediocregopher-mediocre-blog.service
+    '';
+}
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