drop in this standard nix/haskell-flavored gitlab ci config

also fix a bit of metadata in the flake

.gitlab-ci.yml

+# Use a template that makes pipelines run for the default branch, tags, and
+# all types of merge request pipelines.
+include:
+  - template: 'Workflows/MergeRequest-Pipelines.gitlab-ci.yml'
+
+# The jobs all use the `nix` CLI so make sure we have it.
+image: "nixos/nix:2.13.2"
+
+default:
+  # Choose a native Nix runner and we can use the local system's Nix store as
+  # our Nix cache.
+  tags:
+    - "nix"
+
+variables:
+  # Pick a nixpkgs to get cachix and bash from.  Nothing else
+  # Turn on some `nix` CLI features that aren't on by default.
+  NIX_CONFIG: "experimental-features = nix-command flakes"
+
+# Run the standard Haskell linter over the library and test suite sources.
+hlint:
+  script: >-
+    nix run .#hlint -- src/ test/
+
+# Use cabal to build the library and test suite and then run the test suite.
+cabal-build-and-test:
+  script:
+    - |
+      nix run .#cabal-test
+
+# Use nix to build the library and test suite and run the test suite.
+nix-build-and-test:
+  script: >-
+    nix build
+
+# Force a build of the dev shell dependencies so we know they still work.
+# Also, this populates the cache with the results which is a big win for every
+# developer using our cache.
+#
+# We only have an x86_64-linux builder so we can't build the aarch64-darwin
+# shell.  Sorry...
+nix-develop:
+  script: >-
+    nix build .#devShells.x86_64-linux.default

flake.lock

@@ -71,9 +71,7 @@
     "hs-flake-utils": {
       "inputs": {
         "flake-utils": "flake-utils_2",
-        "nixpkgs": [
-          "nixpkgs"
-        ],
+        "nixpkgs": "nixpkgs",
         "pre-commit-hooks": "pre-commit-hooks"
       },
       "locked": {
@@ -93,18 +91,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1670543317,
-        "narHash": "sha256-4mMR56rtxKr+Gwz399jFr4i76SQZxsLWxxyfQlPXRm0=",
-        "owner": "nixos",
+        "lastModified": 1659606041,
+        "narHash": "sha256-W4/u2ssr3fS4XOtltrsDD9w2kF4jYYZr6JyPGUW2jdI=",
+        "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7a6a010c3a1d00f8470a5ca888f2f927f1860a19",
+        "rev": "5f9b871b72b24f066b1a1e189efd0669f2888c49",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
-        "ref": "nixos-22.11",
-        "repo": "nixpkgs",
-        "type": "github"
+        "id": "nixpkgs",
+        "type": "indirect"
       }
     },
     "nixpkgs-stable": {
@@ -155,7 +151,10 @@
       "inputs": {
         "flake-utils": "flake-utils",
         "hs-flake-utils": "hs-flake-utils",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": [
+          "hs-flake-utils",
+          "nixpkgs"
+        ]
       }
     }
   },

flake.nix

 {
-  description = "tahoe-lafs-immutable-uploader";
+  description = "tahoe-capabilities";
 
   inputs = {
     # Nix Inputs
-    nixpkgs.url = github:nixos/nixpkgs/?ref=nixos-22.11;
+    nixpkgs.follows = "hs-flake-utils/nixpkgs";
     flake-utils.url = github:numtide/flake-utils;
     hs-flake-utils.url = "git+https://whetstone.private.storage/jcalderone/hs-flake-utils.git?ref=main";
-    hs-flake-utils.inputs.nixpkgs.follows = "nixpkgs";
   };
 
   outputs = {