diff --git a/flake.lock b/flake.lock
index 16d06a9f..d2dd1f6c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,5 +1,25 @@
 {
   "nodes": {
+    "fixme": {
+      "inputs": {
+        "haskell-flake-utils": "haskell-flake-utils",
+        "nixpkgs": "nixpkgs",
+        "suckless-conf": "suckless-conf"
+      },
+      "locked": {
+        "lastModified": 1675929344,
+        "narHash": "sha256-iytvSV60QF7xNWZKcljjMknSgU3uwAcqqlNiqGRzRLQ=",
+        "owner": "voidlizard",
+        "repo": "fixme",
+        "rev": "e9bb7ccb97649db13b519aa79d1f36bdd1dda55d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "voidlizard",
+        "repo": "fixme",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "locked": {
         "lastModified": 1644229661,
@@ -30,6 +50,36 @@
         "type": "github"
       }
     },
+    "flake-utils_3": {
+      "locked": {
+        "lastModified": 1644229661,
+        "narHash": "sha256-1YdnJAsNy69bpcjuoKdOYQX0YxZBiCYZo4Twxerqv7k=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "3cecb5b042f7f209c56ffd8371b2711a290ec797",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_4": {
+      "locked": {
+        "lastModified": 1644229661,
+        "narHash": "sha256-1YdnJAsNy69bpcjuoKdOYQX0YxZBiCYZo4Twxerqv7k=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "3cecb5b042f7f209c56ffd8371b2711a290ec797",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "haskell-flake-utils": {
       "inputs": {
         "flake-utils": "flake-utils"
@@ -44,7 +94,6 @@
       },
       "original": {
         "owner": "ivanovs-4",
-        "ref": "master",
         "repo": "haskell-flake-utils",
         "type": "github"
       }
@@ -61,6 +110,43 @@
         "rev": "896219e5bde6efac72198550454e9dd9b5ed9ac9",
         "type": "github"
       },
+      "original": {
+        "owner": "ivanovs-4",
+        "repo": "haskell-flake-utils",
+        "type": "github"
+      }
+    },
+    "haskell-flake-utils_3": {
+      "inputs": {
+        "flake-utils": "flake-utils_3"
+      },
+      "locked": {
+        "lastModified": 1672412555,
+        "narHash": "sha256-Kaa8F7nQFR3KuS6Y9WRUxeJeZlp6CCubyrRfmiEsW4k=",
+        "owner": "ivanovs-4",
+        "repo": "haskell-flake-utils",
+        "rev": "896219e5bde6efac72198550454e9dd9b5ed9ac9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ivanovs-4",
+        "ref": "master",
+        "repo": "haskell-flake-utils",
+        "type": "github"
+      }
+    },
+    "haskell-flake-utils_4": {
+      "inputs": {
+        "flake-utils": "flake-utils_4"
+      },
+      "locked": {
+        "lastModified": 1672412555,
+        "narHash": "sha256-Kaa8F7nQFR3KuS6Y9WRUxeJeZlp6CCubyrRfmiEsW4k=",
+        "owner": "ivanovs-4",
+        "repo": "haskell-flake-utils",
+        "rev": "896219e5bde6efac72198550454e9dd9b5ed9ac9",
+        "type": "github"
+      },
       "original": {
         "owner": "ivanovs-4",
         "repo": "haskell-flake-utils",
@@ -70,7 +156,7 @@
     },
     "hspup": {
       "inputs": {
-        "haskell-flake-utils": "haskell-flake-utils_2",
+        "haskell-flake-utils": "haskell-flake-utils_4",
         "nixpkgs": [
           "nixpkgs"
         ]
@@ -91,25 +177,55 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1675237434,
-        "narHash": "sha256-YoFR0vyEa1HXufLNIFgOGhIFMRnY6aZ0IepZF5cYemo=",
+        "lastModified": 1675760670,
+        "narHash": "sha256-do2YGWoNUEPnmE0gWkdGJqsfQ2ARJOkzIfWt+gSpNbA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e63fe191354ccc082199b550980e346597c52282",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1675758091,
+        "narHash": "sha256-7gFSQbSVAFUHtGCNHPF7mPc5CcqDk9M2+inlVPZSneg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "747927516efcb5e31ba03b7ff32f61f6d47e7d87",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1675931149,
+        "narHash": "sha256-UcsoOsP9tDlENB1KKdr9EgSmA124id6OxpHb7IpHlD8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "285b3ff0660640575186a4086e1f8dc0df2874b5",
+        "rev": "47773312034cce8fc09ee166df4d61dd47d8e7d9",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-22.11",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
     "root": {
       "inputs": {
-        "haskell-flake-utils": "haskell-flake-utils",
+        "fixme": "fixme",
+        "haskell-flake-utils": "haskell-flake-utils_3",
         "hspup": "hspup",
-        "nixpkgs": "nixpkgs",
+        "nixpkgs": "nixpkgs_3",
         "saltine": "saltine"
       }
     },
@@ -129,6 +245,25 @@
         "rev": "3d3a54cf46f78b71b4b55653482fb6f4cee6b77d",
         "type": "github"
       }
+    },
+    "suckless-conf": {
+      "inputs": {
+        "haskell-flake-utils": "haskell-flake-utils_2",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1675928120,
+        "narHash": "sha256-vt5i9Ad0wSWbLvRBDqszUgI5+7zSJlGMcXPANC8rH2Q=",
+        "owner": "voidlizard",
+        "repo": "suckless-conf",
+        "rev": "54377068aac95cbfd8c69177a101c434feecff41",
+        "type": "github"
+      },
+      "original": {
+        "owner": "voidlizard",
+        "repo": "suckless-conf",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index bd6a3b3e..08fd1285 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,12 +3,15 @@ description = "hbs2";
 
 inputs = {
 
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
+    nixpkgs.url = "github:nixos/nixpkgs";
     # haskell-flake-utils.url = "github:ivanovs-4/haskell-flake-utils";
     haskell-flake-utils.url = "github:ivanovs-4/haskell-flake-utils/master";
     hspup.url = "github:voidlizard/hspup";
     hspup.inputs.nixpkgs.follows = "nixpkgs";
 
+    fixme.url = "github:voidlizard/fixme";
+    # fixme.inputs.nixpkgs.follows = "nixpkgs";
+
     saltine = {
       url = "github:tel/saltine/3d3a54cf46f78b71b4b55653482fb6f4cee6b77d";
       flake = false;
@@ -65,6 +68,7 @@ outputs = { self, nixpkgs, haskell-flake-utils, ... }@inputs:
      haskellPackages.haskell-language-server
      pkg-config
      inputs.hspup.packages.${pkgs.system}.default
+     inputs.fixme.packages.${pkgs.system}.default
    ];
 
  };
diff --git a/hbs2-core/hbs2-core.cabal b/hbs2-core/hbs2-core.cabal
index bca17434..d25c4957 100644
--- a/hbs2-core/hbs2-core.cabal
+++ b/hbs2-core/hbs2-core.cabal
@@ -103,7 +103,7 @@ library
 
     -- other-modules:
     -- other-extensions:
-    build-depends:    base ^>=4.15.1.0
+    build-depends:    base
                     , aeson
                     , async
                     , attoparsec
@@ -166,7 +166,7 @@ test-suite test
     hs-source-dirs:   test
     main-is:          Main.hs
     build-depends:
-          base ^>=4.15.1.0, hbs2-core
+          base, hbs2-core
         , async
         , bytestring
         , cache
diff --git a/hbs2-core/lib/HBS2/Net/Proto/Peer.hs b/hbs2-core/lib/HBS2/Net/Proto/Peer.hs
index 5af9dd72..36f8d243 100644
--- a/hbs2-core/lib/HBS2/Net/Proto/Peer.hs
+++ b/hbs2-core/lib/HBS2/Net/Proto/Peer.hs
@@ -151,7 +151,9 @@ data instance Event e (PeerHandshake e) =
   KnownPeerEvent (Peer e) (PeerData e)
   deriving stock (Typeable)
 
-instance Typeable (KnownPeer e) => Hashable (EventKey e (KnownPeer e)) where
+instance ( Typeable (KnownPeer e)
+         , Eq (EventKey e (KnownPeer e))
+         ) => Hashable (EventKey e (KnownPeer e)) where
   hashWithSalt salt _ = hashWithSalt salt (someTypeRep p)
     where
       p = Proxy @(KnownPeer e)
diff --git a/hbs2-peer/hbs2-peer.cabal b/hbs2-peer/hbs2-peer.cabal
index 2d4febbf..97188a1b 100644
--- a/hbs2-peer/hbs2-peer.cabal
+++ b/hbs2-peer/hbs2-peer.cabal
@@ -18,7 +18,7 @@ common warnings
 
 common common-deps
     build-depends:
-          base ^>=4.15.1.0, hbs2-core, hbs2-storage-simple
+          base, hbs2-core, hbs2-storage-simple
         , async
         , bytestring
         , cache
@@ -38,7 +38,7 @@ common common-deps
         , random
         , random-shuffle
         , safe
-        , saltine ^>=0.2.0.1
+        , saltine >=0.2.0.1
         , serialise
         , split
         , stm
@@ -108,7 +108,7 @@ executable hbs2-peer
                     , PeerTypes
 
     -- other-extensions:
-    build-depends:    base ^>=4.15.1.0
+    build-depends:    base
     hs-source-dirs:   app
     default-language: Haskell2010
 
diff --git a/hbs2-storage-simple/hbs2-storage-simple.cabal b/hbs2-storage-simple/hbs2-storage-simple.cabal
index 65af7b04..feb9745c 100644
--- a/hbs2-storage-simple/hbs2-storage-simple.cabal
+++ b/hbs2-storage-simple/hbs2-storage-simple.cabal
@@ -60,7 +60,7 @@ library
                     , HBS2.Storage.Simple.Extra
     -- other-modules:
     -- other-extensions:
-    build-depends:    base ^>=4.15.1.0, hbs2-core
+    build-depends:    base, hbs2-core
                     , async
                     , bytestring
                     , bytestring-mmap
@@ -97,7 +97,7 @@ test-suite test
     main-is:          Main.hs
 
     build-depends:
-          base ^>=4.15.1.0, hbs2-storage-simple, hbs2-core
+          base, hbs2-storage-simple, hbs2-core
         , async
         , bytestring
         , cborg
diff --git a/hbs2-tests/hbs2-tests.cabal b/hbs2-tests/hbs2-tests.cabal
index 6059517c..011fe9c6 100644
--- a/hbs2-tests/hbs2-tests.cabal
+++ b/hbs2-tests/hbs2-tests.cabal
@@ -18,7 +18,7 @@ common warnings
 
 common common-deps
     build-depends:
-          base ^>=4.15.1.0, hbs2-core, hbs2-storage-simple
+          base, hbs2-core, hbs2-storage-simple
         , async
         , bytestring
         , cache
@@ -126,7 +126,7 @@ executable test-udp
     main-is:          TestUDP.hs
 
     build-depends:
-          base ^>=4.15.1.0, hbs2-core, hbs2-storage-simple
+          base, hbs2-core, hbs2-storage-simple
         , async
         , attoparsec
         , bytestring
@@ -176,7 +176,7 @@ executable test-logger
     main-is:          TestLogger.hs
 
     build-depends:
-          base ^>=4.15.1.0, hbs2-core, hbs2-storage-simple
+          base, hbs2-core, hbs2-storage-simple
         , async
         , attoparsec
         , bytestring
diff --git a/hbs2/hbs2.cabal b/hbs2/hbs2.cabal
index abac12b4..70f8f29f 100644
--- a/hbs2/hbs2.cabal
+++ b/hbs2/hbs2.cabal
@@ -61,7 +61,7 @@ executable hbs2
     main-is:          Main.hs
     -- other-modules:
     -- other-extensions:
-    build-depends:    base ^>=4.15.1.0, hbs2-core, hbs2-storage-simple
+    build-depends:    base, hbs2-core, hbs2-storage-simple
                     , aeson
                     , async
                     , base58-bytestring