Update to determinate by default (#208)

* Update to determinate by default

Implements DeterminateSystems/nix-src#201

* Fixup the version verification script

Author: grahamc

.github/verify-version.sh

@@ -7,9 +7,8 @@ EXPECTED_VERSION="${1}"
 
 INSTALLED_NIX_VERSION_OUTPUT=$(nix --version)
 INSTALLED_NIX_VERSION=$(echo "${INSTALLED_NIX_VERSION_OUTPUT}" | awk '{print $NF}')
-EXPECTED_OUTPUT="nix (Nix) ${EXPECTED_VERSION}"
 
-if [ "${INSTALLED_NIX_VERSION_OUTPUT}" != "${EXPECTED_OUTPUT}" ]; then
+if [ "${INSTALLED_NIX_VERSION}" != "${EXPECTED_VERSION}" ]; then
   echo "Nix version ${INSTALLED_NIX_VERSION} didn't match expected version ${EXPECTED_VERSION}"
   exit 1
 else

.github/workflows/ci.yml

@@ -153,7 +153,7 @@ jobs:
           # https://github.com/DeterminateSystems/nix-installer/blob/v3.11.3
           - key: url
             value: https://github.com/DeterminateSystems/nix-installer/releases/download/v3.11.3/nix-installer-x86_64-linux
-            nix-version: "2.32.0"
+            nix-version: "2.31.2" # 3.11.3 is based on 2.31.2
 
     steps:
       - uses: actions/checkout@v4

README.md

@@ -96,7 +96,7 @@ Differing from the upstream [Nix](https://github.com/NixOS/nix) installer script
 | Parameter               | Description                                                                                                                                                                                                                                                                    | Type                                       | Default                                                        |
 | :---------------------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :----------------------------------------- | :------------------------------------------------------------- |
 | `backtrace`             | The setting for [`RUST_BACKTRACE`][backtrace]                                                                                                                                                                                                                                  | string                                     |                                                                |
-| `determinate`           | Whether to install [Determinate Nix](https://determinate.systems/enterprise) and log in to FlakeHub for private Flakes and binary caches.                                                                                                                                      | Boolean                                    | `false`                                                        |
+| `determinate`           | Whether to install [Determinate Nix](https://determinate.systems/enterprise) and log in to FlakeHub for private Flakes and binary caches.                                                                                                                                      | Boolean                                    | `true`                                                         |
 | `extra-args`            | Extra arguments to pass to the planner (prefer using structured `with:` arguments unless using a custom [planner]!)                                                                                                                                                            | string                                     |                                                                |
 | `extra-conf`            | Extra configuration lines for `/etc/nix/nix.conf` (includes `access-tokens` with `secrets.GITHUB_TOKEN` automatically if `github-token` is set)                                                                                                                                | string                                     |                                                                |
 | `flakehub`              | Deprecated. Implies `determinate`.                                                                                                                                                                                                                                             | Boolean                                    | `false`                                                        |

action.yml

@@ -10,7 +10,7 @@ inputs:
   determinate:
     description: |
       Whether to install [Determinate Nix](https://determinate.systems/enterprise) and log in to FlakeHub for private Flakes and binary caches.
-    default: false
+    default: true
   extra-args:
     description: Extra args to pass to the planner (prefer using structured `with:` arguments unless using a custom planner!)
     required: false