chore(nix): update flake.nix

flake.lock

@@ -325,22 +325,6 @@
       }
     },
     "flake-utils": {
-      "locked": {
-        "lastModified": 1678901627,
-        "narHash": "sha256-U02riOqrKKzwjsxc/400XnElV+UtPUQWpANPlyazjH0=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "93a2b84fc4b70d9e089d029deacc3583435c2ed6",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "ref": "main",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "flake-utils_2": {
       "locked": {
         "lastModified": 1679360468,
         "narHash": "sha256-LGnza3cfXF10Biw3ZTg0u9o9t7s680Ww200t5KkHTh8=",
@@ -356,7 +340,7 @@
         "type": "github"
       }
     },
-    "flake-utils_3": {
+    "flake-utils_2": {
       "locked": {
         "lastModified": 1653893745,
         "narHash": "sha256-0jntwV3Z8//YwuOjzhV2sgJJPt+HY6KhU7VZUL0fKZQ=",
@@ -371,7 +355,7 @@
         "type": "github"
       }
     },
-    "flake-utils_4": {
+    "flake-utils_3": {
       "locked": {
         "lastModified": 1659877975,
         "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
@@ -446,7 +430,7 @@
         "cabal-36": "cabal-36",
         "cardano-shell": "cardano-shell",
         "flake-compat": "flake-compat",
-        "flake-utils": "flake-utils_2",
+        "flake-utils": "flake-utils",
         "ghc-8.6.5-iohk": "ghc-8.6.5-iohk",
         "hackage": "hackage",
         "hpc-coveralls": "hpc-coveralls",
@@ -713,7 +697,7 @@
     },
     "nix2container": {
       "inputs": {
-        "flake-utils": "flake-utils_3",
+        "flake-utils": "flake-utils_2",
         "nixpkgs": "nixpkgs_3"
       },
       "locked": {
@@ -940,22 +924,6 @@
         "type": "github"
       }
     },
-    "nixpkgs_5": {
-      "locked": {
-        "lastModified": 1624788075,
-        "narHash": "sha256-xzO2aL5gGejNvey2jKGnbnFXbo99pdytlY5FF/IhvAE=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "4ba70da807359ed01d662763a96c7b442762e5ef",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "master",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nosys": {
       "locked": {
         "lastModified": 1667881534,
@@ -998,12 +966,18 @@
         "docker-nixpkgs": "docker-nixpkgs",
         "encoding": "encoding",
         "esqueleto": "esqueleto",
-        "flake-utils": "flake-utils",
+        "flake-utils": [
+          "haskell-nix",
+          "flake-utils"
+        ],
         "haskell-nix": "haskell-nix",
         "ldap-client": "ldap-client",
         "memcached-binary": "memcached-binary",
         "minio-hs": "minio-hs",
-        "nixpkgs": "nixpkgs_5",
+        "nixpkgs": [
+          "haskell-nix",
+          "nixpkgs-unstable"
+        ],
         "serversession": "serversession",
         "xss-sanitize": "xss-sanitize",
         "yesod": "yesod",
@@ -1054,7 +1028,7 @@
         "blank": "blank",
         "devshell": "devshell",
         "dmerge": "dmerge",
-        "flake-utils": "flake-utils_4",
+        "flake-utils": "flake-utils_3",
         "incl": "incl",
         "makes": [
           "haskell-nix",

flake.nix

@@ -7,22 +7,27 @@ rec {
     haskell-nix = {
       url = "github:input-output-hk/haskell.nix";
     };
-    nixpkgs = {
+
-      type = "github";
+    # nixpkgs = {
-      owner = "NixOS";
+    #   type = "github";
-      repo = "nixpkgs";
+    #   owner = "NixOS";
-      ref = "master";
+    #   repo = "nixpkgs";
-    };
+    #   ref = "master";
+    # };
+    # flake-utils = {
+    #   type = "github";
+    #   owner = "numtide";
+    #   repo = "flake-utils";
+    #   ref = "main";
+    # };
+
+    nixpkgs.follows = "haskell-nix/nixpkgs-unstable";
+    flake-utils.follows = "haskell-nix/flake-utils";
+
     docker-nixpkgs = {
       url = "github:nix-community/docker-nixpkgs";
       flake = false;
     };
-    flake-utils = {
-      type = "github";
-      owner = "numtide";
-      repo = "flake-utils";
-      ref = "main";
-    };
 
     encoding = {
       url = "git+https://gitlab.ifi.lmu.de/uni2work/haskell/encoding.git?ref=uni2work";