From 9f0decc0efe2bef4a702e2dccbc6f4a39c80d44c Mon Sep 17 00:00:00 2001
From: Daniel Loreto <279789+loreto@users.noreply.github.com>
Date: Fri, 26 Aug 2022 10:38:15 -0700
Subject: [PATCH] [devbox] Download nixpkgs using fetchTarball (#2639)
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## Summary
Download nixpkgs using `fetchTarball`. We were previously using `fetchGit`, but it's too slow – users have been complaining that the first call to `devbox shell` takes to long, and part of it is due to `fetchGit`. Replacing with `fetchTarball` instead.

## How was it tested?
Re-built and ran on example projects.

## Is this change backwards-compatible?
Yes, I kept the same version of nixpkgs and everything.
---
 tmpl/default.nix.tmpl | 7 +++----
 tmpl/shell.nix.tmpl   | 7 +++----
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/tmpl/default.nix.tmpl b/tmpl/default.nix.tmpl
index 573a894af6d..3b642926d1b 100644
--- a/tmpl/default.nix.tmpl
+++ b/tmpl/default.nix.tmpl
@@ -1,10 +1,9 @@
 let
-  pkgs = import (fetchGit {
-    url = "https://github.com/nixos/nixpkgs/";
-    ref = "refs/heads/nixos-unstable";
+  pkgs = import (fetchTarball {
     # Commit hash as of 2022-08-16
     # `git ls-remote https://github.com/nixos/nixpkgs nixos-unstable`
-    rev = "af9e00071d0971eb292fd5abef334e66eda3cb69";
+    url = "https://github.com/nixos/nixpkgs/archive/af9e00071d0971eb292fd5abef334e66eda3cb69.tar.gz";
+    sha256 = "1mdwy0419m5i9ss6s5frbhgzgyccbwycxm5nal40c8486bai0hwy";
   }) {};
 in with pkgs;
 buildEnv {
diff --git a/tmpl/shell.nix.tmpl b/tmpl/shell.nix.tmpl
index 043c9c779fe..6933a055be2 100644
--- a/tmpl/shell.nix.tmpl
+++ b/tmpl/shell.nix.tmpl
@@ -1,10 +1,9 @@
 let
-  pkgs = import (fetchGit {
-    url = "https://github.com/nixos/nixpkgs/";
-    ref = "refs/heads/nixos-unstable";
+  pkgs = import (fetchTarball {
     # Commit hash as of 2022-08-16
     # `git ls-remote https://github.com/nixos/nixpkgs nixos-unstable`
-    rev = "af9e00071d0971eb292fd5abef334e66eda3cb69";
+    url = "https://github.com/nixos/nixpkgs/archive/af9e00071d0971eb292fd5abef334e66eda3cb69.tar.gz";
+    sha256 = "1mdwy0419m5i9ss6s5frbhgzgyccbwycxm5nal40c8486bai0hwy";
   }) {};
 in with pkgs;
 mkShell {