initial commit

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1787736819,
+        "narHash": "sha256-cV5xEJJK3BvhU8rEd4mC9UsmDi5qscv/kzGPhBRC5WA=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "9fbb54b33e91ee4ca368e35a78e0613c720600b3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,23 @@
+{
+  description = "A flake that provides a set of useful helper functions";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }: {
+    mkIfElse = with nixpkgs.lib; p: yes: no: mkMerge [
+      (mkIf p yes)
+      (mkIf (!p) no)
+    ];
+
+    mkSymlinkActivationScript = {target, source, isDir ? false}: ''
+      if [ ${if isDir then "-d" else "-f"} ${target} ]; then
+        rm${if isDir then " -rf" else ""} ${target}
+      fi
+      ln -s ${source} ${target}
+    '';
+
+    attrByStrPath = strPath: set: nixpkgs.lib.attrsets.attrByPath (nixpkgs.lib.strings.splitString "." strPath) null set;
+  };
+}