Prefer builtins.path

Thanks to the Nix anti-patterns documented here...

https://nix.dev/anti-patterns/language.html#reproducability-referencing-top-level-directory-with

...I'm cleaning up some of my Nix expressions. Read the article for more
context.

4 files changed, 5 insertions, 5 deletions

diff --git a/website/sandbox/contentful/default.nix b/website/sandbox/contentful/default.nix
index 827056a913be..00714f45d098 100644
--- a/website/sandbox/contentful/default.nix
+++ b/website/sandbox/contentful/default.nix
@@ -2,7 +2,7 @@ let
   pkgs = import <nixpkgs> {};
 in pkgs.stdenv.mkDerivation {
   name = "ideal-website";
-  srcs = ./.;
+  src = builtins.path { path = ./.; name = "contentful"; };
   buildInputs = with pkgs; [
     nodejs
     # Exposes lscpu for parcel.js
diff --git a/website/sandbox/covid-uk/default.nix b/website/sandbox/covid-uk/default.nix
index 0f5545c2f75d..309b1fa64b4d 100644
--- a/website/sandbox/covid-uk/default.nix
+++ b/website/sandbox/covid-uk/default.nix
@@ -3,7 +3,7 @@
 pkgs.stdenv.mkDerivation {
   name = "covid-uk";
   buildInputs = [];
-  src = ./.;
+  src = builtins.path { path = ./.; name = "covid-uk"; };
   # TODO(wpcarro): Need to run `yarn install` somehow.
   # TODO(wpcarro): Need to run `npx tailwindcss build styles.css -o output.css`.
   buildPhase = ''
diff --git a/website/sandbox/default.nix b/website/sandbox/default.nix
index 81cd5c212699..4f86b49002a5 100644
--- a/website/sandbox/default.nix
+++ b/website/sandbox/default.nix
@@ -3,7 +3,7 @@
 pkgs.stdenv.mkDerivation {
   name = "covid-uk";
   buildInputs = [];
-  src = ./.;
+  src = builtins.path { path = ./.; name = "sandbox"; };
   buildPhase = ''
     mkdir -p $out
     cp $src/index.html $out
diff --git a/website/sandbox/learnpianochords/default.nix b/website/sandbox/learnpianochords/default.nix
index 98f548e359d4..37dfd4d390f5 100644
--- a/website/sandbox/learnpianochords/default.nix
+++ b/website/sandbox/learnpianochords/default.nix
@@ -43,7 +43,7 @@ let
   mainDotElm = mkDerivation {
     name = "elm-app-0.1.0";
     srcs = ./elm-srcs.nix;
-    src = ./.;
+    src = builtins.path { path = ./.; name = "learnpianochords"; };
     targets = ["Main"];
     srcdir = "./src";
     outputJavaScript = true;
@@ -51,7 +51,7 @@ let
 in stdenv.mkDerivation {
   name = "learn-piano-chords";
   buildInputs = [];
-  src = ./.;
+  src = builtins.path { path = ./.; name = "learnpianochords"; };
   buildPhase = ''
     mkdir -p $out
     cp index.html output.css ${mainDotElm}/Main.min.js $out