README.md

@@ -2,14 +2,11 @@
 
 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
 
-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
-```
+The defaultPackage output of this repository's flake is a derivation containing the motd files in this repository.
 
 ## sources
 

flake.lock

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

flake.nix

@@ -1,39 +1,38 @@
 {
   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,
-    }:
-    flake-utils.lib.eachDefaultSystem (
-      system:
+  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:
       let
         pkgs = nixpkgs.legacyPackages.${system};
-        inherit (pkgs) symlinkJoin;
+        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))}
+          '';
+        };
       in
       {
-        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";
-            };
-        };
+        defaultPackage = motd;
       }
     );
 }