diff --git a/pkgs/applications/editors/leksah/default.nix b/pkgs/applications/editors/leksah/default.nix
deleted file mode 100644
index 86f0106ed050..000000000000
--- a/pkgs/applications/editors/leksah/default.nix
+++ /dev/null
@@ -1,28 +0,0 @@
-{ cabal, binary, binaryShared, Cabal, deepseq, enumerator, filepath
-, gio, glib, gtk, gtksourceview2, hslogger, leksahServer, ltk, mtl
-, network, parsec, QuickCheck, regexBase, regexTdfa, strict, text
-, time, transformers, utf8String
-}:
-
-cabal.mkDerivation (self: {
-  pname = "leksah";
-  version = "0.12.1.3";
-  sha256 = "1w61wnd0nq9iqh0pwn9dz3m4qn3m0zasv0m3ki4k7plcdrmkqb3y";
-  isLibrary = true;
-  isExecutable = true;
-  buildDepends = [
-    binary binaryShared Cabal deepseq enumerator filepath gio glib gtk
-    gtksourceview2 hslogger leksahServer ltk mtl network parsec
-    QuickCheck regexBase regexTdfa strict text time transformers
-    utf8String
-  ];
-  testDepends = [ Cabal QuickCheck ];
-  noHaddock = true;
-  meta = {
-    homepage = "http://www.leksah.org";
-    description = "Haskell IDE written in Haskell";
-    license = "GPL";
-    platforms = self.stdenv.lib.platforms.linux;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/leksah/leksah-server.nix b/pkgs/development/libraries/haskell/leksah/leksah-server.nix
deleted file mode 100644
index a0d3fcc6a5c9..000000000000
--- a/pkgs/development/libraries/haskell/leksah/leksah-server.nix
+++ /dev/null
@@ -1,26 +0,0 @@
-{ cabal, attoparsec, attoparsecConduit, binary, binaryShared, Cabal
-, conduit, deepseq, executablePath, filepath, haddock, hslogger
-, HUnit, ltk, network, parsec, processLeksah, strict, text, time
-, transformers
-}:
-
-cabal.mkDerivation (self: {
-  pname = "leksah-server";
-  version = "0.13.1.0";
-  sha256 = "11dggg9zaf7fhh8s6bc3dwr4b1qk7k5bj429i1vvqhrxc6968yjb";
-  isLibrary = true;
-  isExecutable = true;
-  buildDepends = [
-    attoparsec attoparsecConduit binary binaryShared Cabal conduit
-    deepseq executablePath filepath haddock hslogger ltk network parsec
-    processLeksah strict text time transformers
-  ];
-  testDepends = [ conduit hslogger HUnit transformers ];
-  meta = {
-    homepage = "http://leksah.org";
-    description = "Metadata collection for leksah";
-    license = "GPL";
-    platforms = self.stdenv.lib.platforms.linux;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/leksah/process-leksah.nix b/pkgs/development/libraries/haskell/leksah/process-leksah.nix
deleted file mode 100644
index b8f0ed37d4cb..000000000000
--- a/pkgs/development/libraries/haskell/leksah/process-leksah.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ cabal, filepath }:
-
-cabal.mkDerivation (self: {
-  pname = "process-leksah";
-  version = "1.0.1.4";
-  sha256 = "1899ybhnsj22sir2l933lhkk9fpcgjbb4qd6gscnby28qcs5bwbv";
-  buildDepends = [ filepath ];
-  meta = {
-    description = "Process libraries";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/ltk/default.nix b/pkgs/development/libraries/haskell/ltk/default.nix
deleted file mode 100644
index df1e4be218f0..000000000000
--- a/pkgs/development/libraries/haskell/ltk/default.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ cabal, Cabal, filepath, glib, gtk3, mtl, parsec, transformers }:
-
-cabal.mkDerivation (self: {
-  pname = "ltk";
-  version = "0.13.1.0";
-  sha256 = "09ryyzjd3iazwiw714hsny2b9f4b1cfhyzc11k5xzin5kh5d804a";
-  buildDepends = [
-    Cabal filepath glib gtk3 mtl parsec transformers
-  ];
-  meta = {
-    homepage = "http://www.leksah.org";
-    description = "Leksah tool kit";
-    license = "GPL";
-    platforms = self.stdenv.lib.platforms.linux;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 4b577eddaf2b..abc09192bb35 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1256,8 +1256,6 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   lazysmallcheck = callPackage ../development/libraries/haskell/lazysmallcheck {};
 
-  leksahServer = callPackage ../development/libraries/haskell/leksah/leksah-server.nix {};
-
   lens = callPackage ../development/libraries/haskell/lens {};
 
   lensDatetime = callPackage ../development/libraries/haskell/lens-datetime {};
@@ -1318,8 +1316,6 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   lrucache = callPackage ../development/libraries/haskell/lrucache {};
 
-  ltk = callPackage ../development/libraries/haskell/ltk {};
-
   lockfreeQueue = callPackage ../development/libraries/haskell/lockfree-queue {};
 
   logfloat = callPackage ../development/libraries/haskell/logfloat {};
@@ -1705,8 +1701,6 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   processExtras = callPackage ../development/libraries/haskell/process-extras {};
 
-  processLeksah = callPackage ../development/libraries/haskell/leksah/process-leksah.nix {};
-
   prolog = callPackage ../development/libraries/haskell/prolog {};
   prologGraphLib = callPackage ../development/libraries/haskell/prolog-graph-lib {};
   prologGraph = callPackage ../development/libraries/haskell/prolog-graph {};
@@ -2590,8 +2584,6 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   idris = callPackage ../development/compilers/idris/wrapper.nix {};
 
-  leksah = callPackage ../applications/editors/leksah {};
-
   nc-indicators = callPackage ../applications/misc/nc-indicators {};
 
   sloane = callPackage ../applications/science/math/sloane {};