diff --git a/pkgs/development/compilers/ghc/9.10.1.nix b/pkgs/development/compilers/ghc/9.10.1.nix
deleted file mode 100644
index d1824ce680fd..000000000000
--- a/pkgs/development/compilers/ghc/9.10.1.nix
+++ /dev/null
@@ -1,4 +0,0 @@
-import ./common-hadrian.nix {
-  version = "9.10.1";
-  sha256 = "bf386a302d4ee054791ffd51748900f15d71760fd199157922d120cc1f89e2f7";
-}
diff --git a/pkgs/development/compilers/ghc/common-hadrian.nix b/pkgs/development/compilers/ghc/common-hadrian.nix
index effbdec32ee1..dff6daf681ac 100644
--- a/pkgs/development/compilers/ghc/common-hadrian.nix
+++ b/pkgs/development/compilers/ghc/common-hadrian.nix
@@ -185,29 +185,22 @@
           || (lib.versionAtLeast version "9.8" && lib.versionOlder version "9.11");
       in
 
-      lib.optionals
-        (
-          # 2025-01-16: unix >= 2.8.6.0 is unaffected which is shipped by GHC 9.12.1 and 9.8.4
-          lib.versionOlder version "9.11"
-          && !(lib.versionAtLeast version "9.6.7" && lib.versionOlder version "9.8")
-          && !(lib.versionAtLeast version "9.8.4" && lib.versionOlder version "9.9")
-          && !(lib.versionAtLeast version "9.10.2" && lib.versionOlder version "9.11")
-        )
-        [
-          # Determine size of time related types using hsc2hs instead of assuming CLong.
-          # Prevents failures when e.g. stat(2)ing on 32bit systems with 64bit time_t etc.
-          # https://github.com/haskell/ghcup-hs/issues/1107
-          # https://gitlab.haskell.org/ghc/ghc/-/issues/25095
-          # Note that in normal situations this shouldn't be the case since nixpkgs
-          # doesn't set -D_FILE_OFFSET_BITS=64 and friends (yet).
-          (fetchpatch {
-            name = "unix-fix-ctimeval-size-32-bit.patch";
-            url = "https://github.com/haskell/unix/commit/8183e05b97ce870dd6582a3677cc82459ae566ec.patch";
-            sha256 = "17q5yyigqr5kxlwwzb95sx567ysfxlw6bp3j4ji20lz0947aw6gv";
-            stripLen = 1;
-            extraPrefix = "libraries/unix/";
-          })
-        ]
+      # 2025-01-16: unix >= 2.8.6.0 is unaffected which is shipped by GHC 9.12.1, 9.10.2, 9.8.4 and 9.6.7
+      lib.optionals (lib.versionOlder version "9.6.7") [
+        # Determine size of time related types using hsc2hs instead of assuming CLong.
+        # Prevents failures when e.g. stat(2)ing on 32bit systems with 64bit time_t etc.
+        # https://github.com/haskell/ghcup-hs/issues/1107
+        # https://gitlab.haskell.org/ghc/ghc/-/issues/25095
+        # Note that in normal situations this shouldn't be the case since nixpkgs
+        # doesn't set -D_FILE_OFFSET_BITS=64 and friends (yet).
+        (fetchpatch {
+          name = "unix-fix-ctimeval-size-32-bit.patch";
+          url = "https://github.com/haskell/unix/commit/8183e05b97ce870dd6582a3677cc82459ae566ec.patch";
+          sha256 = "17q5yyigqr5kxlwwzb95sx567ysfxlw6bp3j4ji20lz0947aw6gv";
+          stripLen = 1;
+          extraPrefix = "libraries/unix/";
+        })
+      ]
       ++ lib.optionals (lib.versionOlder version "9.8") [
         # Fix unlit being installed under a different name than is used in the
         # settings file: https://gitlab.haskell.org/ghc/ghc/-/issues/23317 krank:ignore-line
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 324dd4c6ea84..3f0a1eb35dab 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -112,21 +112,6 @@ in
         inherit buildTargetLlvmPackages llvmPackages;
       };
       ghc98 = compiler.ghc984;
-      ghc9101 = callPackage ../development/compilers/ghc/9.10.1.nix {
-        bootPkgs =
-          if stdenv.buildPlatform.isDarwin then
-            # it seems like the GHC 9.6.* bindists are built with a different
-            # toolchain than we are using (which I'm guessing from the fact
-            # that 9.6.4 bindists pass linker flags our ld doesn't support).
-            # With both 9.6.3 and 9.6.4 binary it is impossible to link against
-            # the clock package (probably a hsc2hs problem).
-            bb.packages.ghc967
-          else
-            bb.packages.ghc963Binary;
-        inherit (buildPackages.python3Packages) sphinx;
-        inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
-        inherit buildTargetLlvmPackages llvmPackages;
-      };
       ghc9102 = callPackage ../development/compilers/ghc/9.10.2.nix {
         bootPkgs =
           if stdenv.buildPlatform.isDarwin then
@@ -257,11 +242,6 @@ in
         compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-9.8.x.nix { };
       };
       ghc98 = packages.ghc984;
-      ghc9101 = callPackage ../development/haskell-modules {
-        buildHaskellPackages = bh.packages.ghc9101;
-        ghc = bh.compiler.ghc9101;
-        compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-9.10.x.nix { };
-      };
       ghc9102 = callPackage ../development/haskell-modules {
         buildHaskellPackages = bh.packages.ghc9102;
         ghc = bh.compiler.ghc9102;
diff --git a/pkgs/top-level/release-haskell.nix b/pkgs/top-level/release-haskell.nix
index 22ae9de4c624..aa0c3407873c 100644
--- a/pkgs/top-level/release-haskell.nix
+++ b/pkgs/top-level/release-haskell.nix
@@ -66,7 +66,6 @@ let
     ghc948
     ghc967
     ghc984
-    ghc9101
     ghc9102
     ghc9103
     # exclude ghc9121 due to severe miscompilation bug
@@ -551,14 +550,12 @@ let
       funcmp = released;
       git-annex = [
         # for 9.10, test that using filepath (instead of filepath-bytestring) works.
-        compilerNames.ghc9101
         compilerNames.ghc9102
         compilerNames.ghc9103
       ];
       haskell-language-server = released;
       hoogle = released;
       hlint = lib.subtractLists [
-        compilerNames.ghc9101
         compilerNames.ghc9102
         compilerNames.ghc9103
         compilerNames.ghc9122
@@ -586,7 +583,6 @@ let
         compilerNames.ghc967
       ];
       weeder = lib.subtractLists [
-        compilerNames.ghc9101
         compilerNames.ghc9102
         compilerNames.ghc9103
         compilerNames.ghc9122