Update README

README.md

@@ -2,11 +2,14 @@
 
 Repository of lists of one-liners to use as a message-of-the-day.
 
-This repository was a learning exercise; this is not a good example to follow of how to distribute text files with Nix.
-
 ## flake
 
-The defaultPackage output of this repository's flake is a derivation containing the motd files in this repository.
+Package `motd` is a folder of the MOTD files in `motd/`. Each file's path is also accessible as a passthru attribute on the package.
+
+```
+$ nix eval --raw .#motd.rebirth
+/nix/store/ikp1hxb1hrzific5wyghm2lvzv27qqxp-motd/boi-rebirth-fortunes.txt
+```
 
 ## sources
 

flake.lock

@@ -17,11 +17,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1640223855,
-        "narHash": "sha256-2bOGDrou/P0E85O5CzcZcHrvDBR78kRIwSPMlaLnFb8=",
+        "lastModified": 1721369373,
+        "narHash": "sha256-KomTFhD1yPKYvU7cqJGBRyQACfmGJMMkUWJpvw3K7B8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e7f5c0a08e442ed5772852b9f832d5d716020ebf",
+        "rev": "9d5188abf958325668881e99aa74866b69214639",
         "type": "github"
       },
       "original": {

flake.nix

@@ -1,38 +1,39 @@
 {
   description = "A flake of MOTD files.";
 
-  inputs.nixpkgs.url = github:NixOS/nixpkgs;
-  inputs.flake-utils.url = github:numtide/flake-utils;
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
 
-  outputs = { self, nixpkgs, flake-utils }:
-    let
-      motdFiles = {
-        "40k" = ./40k-thought-for-the-day.txt;
-        rebirth = ./boi-rebirth-fortunes.txt;
-        bofh = ./bofh-excuses.txt;
-        discordium = ./discordium.txt;
-      };
-    in
-    flake-utils.lib.eachDefaultSystem (system:
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
-        motd = pkgs.stdenv.mkDerivation {
-          pname = "motd";
-          version = "1.0";
-          builder = builtins.toFile "motd-builder.sh" ''
-            source $stdenv/setup
-            mkdir -p $out
-            ${builtins.foldl'
-              (a: b: "${a}\n${b}")
-              ""
-              (map
-                (attr: "cp ${motdFiles.${attr}} $out/${attr}.txt")
-                (builtins.attrNames motdFiles))}
-          '';
-        };
+        inherit (pkgs) symlinkJoin;
       in
       {
-        defaultPackage = motd;
+        formatter = pkgs.nixfmt-rfc-style;
+
+        packages.default = self.packages.${system}.motd;
+        packages.motd = symlinkJoin {
+          name = "motd";
+          paths = [ ./motd ];
+          passthru =
+            let
+              motd = "${self.packages.${system}.motd}";
+            in
+            {
+              "40k" = "${motd}/40k-thought-for-the-day.txt";
+              rebirth = "${motd}/boi-rebirth-fortunes.txt";
+              bofh = "${motd}/bofh-excuses.txt";
+              discordium = "${motd}/discordium.txt";
+            };
+        };
       }
     );
 }