[flake] update nixpkgs and haskell.nix

flake.lock

@@ -410,11 +410,11 @@
     "hackage": {
       "flake": false,
       "locked": {
-        "lastModified": 1744935896,
-        "narHash": "sha256-jsIFpLR8EOoj1np4f/fwYvm55ONVF4ebXHimW07pv3c=",
+        "lastModified": 1751330565,
+        "narHash": "sha256-1j7d7YREFCsNURri7GzLfgFVHX/qTLr35k4p82bNitA=",
         "owner": "input-output-hk",
         "repo": "hackage.nix",
-        "rev": "616d5d6d08eee94376c57b560c1155a43ddfb1b1",
+        "rev": "45e2fe0d3e5a1cc828afa845ce3aa3fe01c6ede5",
         "type": "github"
       },
       "original": {
@@ -426,11 +426,11 @@
     "hackage-for-stackage": {
       "flake": false,
       "locked": {
-        "lastModified": 1744935886,
-        "narHash": "sha256-51sNWB+CsVaq24DC7gYLuDmTX73AMIpfpW0HvOyCi/8=",
+        "lastModified": 1751329779,
+        "narHash": "sha256-cFwbC7JsNHDlbJnIvJesjR4hVftQfMcUrEvULZ5Jq88=",
         "owner": "input-output-hk",
         "repo": "hackage.nix",
-        "rev": "4e36dca00cbcf1db7afea37c5196b7394ccc53ea",
+        "rev": "a3f6e8268b859954a0f751e099eab66590a5e1ae",
         "type": "github"
       },
       "original": {
@@ -440,6 +440,22 @@
         "type": "github"
       }
     },
+    "hackage-internal": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1750307553,
+        "narHash": "sha256-iiafNoeLHwlSLQTyvy8nPe2t6g5AV4PPcpMeH/2/DLs=",
+        "owner": "input-output-hk",
+        "repo": "hackage.nix",
+        "rev": "f7867baa8817fab296528f4a4ec39d1c7c4da4f3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "input-output-hk",
+        "repo": "hackage.nix",
+        "type": "github"
+      }
+    },
     "haskell-bee": {
       "flake": false,
       "locked": {
@@ -484,10 +500,12 @@
         "ghc-8.6.5-iohk": "ghc-8.6.5-iohk",
         "hackage": "hackage",
         "hackage-for-stackage": "hackage-for-stackage",
+        "hackage-internal": "hackage-internal",
         "hls": "hls",
         "hls-1.10": "hls-1.10",
         "hls-2.0": "hls-2.0",
         "hls-2.10": "hls-2.10",
+        "hls-2.11": "hls-2.11",
         "hls-2.2": "hls-2.2",
         "hls-2.3": "hls-2.3",
         "hls-2.4": "hls-2.4",
@@ -505,16 +523,17 @@
         "nixpkgs-2311": "nixpkgs-2311",
         "nixpkgs-2405": "nixpkgs-2405",
         "nixpkgs-2411": "nixpkgs-2411",
+        "nixpkgs-2505": "nixpkgs-2505",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "old-ghc-nix": "old-ghc-nix",
         "stackage": "stackage"
       },
       "locked": {
-        "lastModified": 1744937487,
-        "narHash": "sha256-OwgTiynnZ8FPHILO33EVNvmCVkgDuQaCThij6eeE8Ko=",
+        "lastModified": 1751331119,
+        "narHash": "sha256-jRoReVMErUZ/IplVTyir60DPXHknaUjyu5YzEXehIC0=",
         "owner": "input-output-hk",
         "repo": "haskell.nix",
-        "rev": "462ec8f8a2981a9f8fb975ff82cbe9fe898261f0",
+        "rev": "58cfeb90d412d94749e08ac8ec6759e439e1c3f7",
         "type": "github"
       },
       "original": {
@@ -638,6 +657,23 @@
         "type": "github"
       }
     },
+    "hls-2.11": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1747306193,
+        "narHash": "sha256-/MmtpF8+FyQlwfKHqHK05BdsxC9LHV70d/FiMM7pzBM=",
+        "owner": "haskell",
+        "repo": "haskell-language-server",
+        "rev": "46ef4523ea4949f47f6d2752476239f1c6d806fe",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "2.11.0.0",
+        "repo": "haskell-language-server",
+        "type": "github"
+      }
+    },
     "hls-2.2": {
       "flake": false,
       "locked": {
@@ -843,11 +879,11 @@
     "iserv-proxy": {
       "flake": false,
       "locked": {
-        "lastModified": 1742121966,
-        "narHash": "sha256-x4bg4OoKAPnayom0nWc0BmlxgRMMHk6lEPvbiyFBq1s=",
+        "lastModified": 1750543273,
+        "narHash": "sha256-WaswH0Y+Fmupvv8AkIlQBlUy/IdD3Inx9PDuE+5iRYY=",
         "owner": "stable-haskell",
         "repo": "iserv-proxy",
-        "rev": "e9dc86ed6ad71f0368c16672081c8f26406c3a7e",
+        "rev": "a53c57c9a8d22a66a2f0c4c969e806da03f08c28",
         "type": "github"
       },
       "original": {
@@ -892,16 +928,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1751048012,
-        "narHash": "sha256-MYbotu4UjWpTsq01wglhN5xDRfZYLFtNk7SBY0BcjkU=",
+        "lastModified": 1751211869,
+        "narHash": "sha256-1Cu92i1KSPbhPCKxoiVG5qnoRiKTgR5CcGSRyLpOd7Y=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a684c58d46ebbede49f280b653b9e56100aa3877",
+        "rev": "b43c397f6c213918d6cfe6e3550abfe79b5d1c51",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-24.11",
+        "ref": "nixos-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -956,11 +992,11 @@
     },
     "nixpkgs-2411": {
       "locked": {
-        "lastModified": 1739151041,
-        "narHash": "sha256-uNszcul7y++oBiyYXjHEDw/AHeLNp8B6pyWOB+RLA/4=",
+        "lastModified": 1748037224,
+        "narHash": "sha256-92vihpZr6dwEMV6g98M5kHZIttrWahb9iRPBm1atcPk=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "94792ab2a6beaec81424445bf917ca2556fbeade",
+        "rev": "f09dede81861f3a83f7f06641ead34f02f37597f",
         "type": "github"
       },
       "original": {
@@ -970,13 +1006,29 @@
         "type": "github"
       }
     },
+    "nixpkgs-2505": {
+      "locked": {
+        "lastModified": 1748852332,
+        "narHash": "sha256-r/wVJWmLYEqvrJKnL48r90Wn9HWX9SHFt6s4LhuTh7k=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "a8167f3cc2f991dd4d0055746df53dae5fd0c953",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-25.05-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1737110817,
-        "narHash": "sha256-DSenga8XjPaUV5KUFW/i3rNkN7jm9XmguW+qQ1ZJTR4=",
+        "lastModified": 1748856973,
+        "narHash": "sha256-RlTsJUvvr8ErjPBsiwrGbbHYW8XbB/oek0Gi78XdWKg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "041c867bad68dfe34b78b2813028a2e2ea70a23c",
+        "rev": "e4b09e47ace7d87de083786b404bf232eb6c89d8",
         "type": "github"
       },
       "original": {
@@ -1177,11 +1229,11 @@
     "stackage": {
       "flake": false,
       "locked": {
-        "lastModified": 1744935141,
-        "narHash": "sha256-uY89wZrjzINYWSoLL/kdz8lNgqiiYX2Wqk1cZe0kZ4M=",
+        "lastModified": 1751328928,
+        "narHash": "sha256-iOV2ACox9AA9G0H5YnilXVQohxVXNDNmmJsAP8mUfb8=",
         "owner": "input-output-hk",
         "repo": "stackage.nix",
-        "rev": "5858674ee4daba8e9b81f5ecce2dc4215a286767",
+        "rev": "be588c2327a1c281d9ad66c522266f09ae809176",
         "type": "github"
       },
       "original": {

flake.nix

@@ -28,7 +28,7 @@
     # to follow haskell.nix's nixpkgs pinned version,
     # but it may be a few months old, so pin it here instead.
     #nixpkgs.follows = "haskell-nix/nixpkgs";
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
     haskell-nix.inputs.nixpkgs.follows = "nixpkgs";
 
     # Convenient Nix Flake utilities, like flake-utils.lib.eachSystem.