diff --git a/pkgs/build-support/fetchegg/builder.sh b/pkgs/build-support/fetchegg/builder.sh
new file mode 100644
index 000000000000..204661063090
--- /dev/null
+++ b/pkgs/build-support/fetchegg/builder.sh
@@ -0,0 +1,9 @@
+source $stdenv/setup
+
+header "exporting egg ${eggName} (version $version) into $out"
+
+mkdir -p $out
+chicken-install -r "${eggName}:${version}"
+cp -r ${eggName}/* $out/
+
+stopNest
diff --git a/pkgs/build-support/fetchegg/default.nix b/pkgs/build-support/fetchegg/default.nix
new file mode 100644
index 000000000000..223d2098c770
--- /dev/null
+++ b/pkgs/build-support/fetchegg/default.nix
@@ -0,0 +1,28 @@
+# Fetches a chicken egg from henrietta using `chicken-install -r'
+# See: http://wiki.call-cc.org/chicken-projects/egg-index-4.html
+
+{ stdenv, chicken }:
+{ name, version, md5 ? "", sha256 ? "" }:
+
+stdenv.mkDerivation {
+  name = "chicken-${name}-export";
+  builder = ./builder.sh;
+  buildInputs = [ chicken ];
+
+  outputHashAlgo = if sha256 == "" then "md5" else "sha256";
+  outputHashMode = "recursive";
+  outputHash = if sha256 == "" then md5 else sha256;
+
+  inherit version;
+
+  eggName = name;
+
+  impureEnvVars = [
+    # We borrow these environment variables from the caller to allow
+    # easy proxy configuration.  This is impure, but a fixed-output
+    # derivation like fetchurl is allowed to do so since its result is
+    # by definition pure.
+    "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"
+  ];
+}
+
diff --git a/pkgs/development/compilers/chicken/0001-Introduce-CHICKEN_REPOSITORY_EXTRA.patch b/pkgs/development/compilers/chicken/0001-Introduce-CHICKEN_REPOSITORY_EXTRA.patch
new file mode 100644
index 000000000000..0962c9cf46d3
--- /dev/null
+++ b/pkgs/development/compilers/chicken/0001-Introduce-CHICKEN_REPOSITORY_EXTRA.patch
@@ -0,0 +1,130 @@
+From 752dff853186dc334c519a86fa92f087795fea02 Mon Sep 17 00:00:00 2001
+From: Moritz Heidkamp <moritz.heidkamp@bevuta.com>
+Date: Wed, 1 Oct 2014 22:41:30 +0200
+Subject: [PATCH] Introduce CHICKEN_REPOSITORY_EXTRA
+
+This environment variable works like CHICKEN_REPOSITORY but supports
+multiple paths separated by `:'. Those paths are searched after
+CHICKEN_REPOSITORY when loading extensions via `require-library' and
+friends. It can be accessed and changed at runtime via the new procedure
+`repository-extra-paths' which is analog to `repository-path'.
+---
+ chicken-install.scm | 11 +++++++----
+ chicken.import.scm  |  1 +
+ eval.scm            | 37 +++++++++++++++++++++++++++++++------
+ 3 files changed, 39 insertions(+), 10 deletions(-)
+
+diff --git a/chicken-install.scm b/chicken-install.scm
+index 2ef6ef4..b5c6bf8 100644
+--- a/chicken-install.scm
++++ b/chicken-install.scm
+@@ -109,10 +109,10 @@
+   (define *show-foreign-depends* #f)
+   (define *hacks* '())
+ 
+-  (define (repo-path)
++  (define (repo-paths)
+     (if (and *cross-chicken* (not *host-extension*))
+-	(make-pathname C_TARGET_LIB_HOME (sprintf "chicken/~a" C_BINARY_VERSION))
+-	(repository-path)))
++	(list (make-pathname C_TARGET_LIB_HOME (sprintf "chicken/~a" C_BINARY_VERSION)))
++	(cons (repository-path) (repository-extra-paths))))
+ 
+   (define (get-prefix #!optional runtime)
+     (cond ((and *cross-chicken*
+@@ -757,7 +757,10 @@
+ 		  "installed extension has no information about which egg it belongs to"
+ 		  (pathname-file sf))
+ 		 #f))))
+-      (glob (make-pathname (repo-path) "*" "setup-info")))
++      (append-map
++       (lambda (path)
++	 (glob (make-pathname path "*" "setup-info")))
++       (repo-paths)))
+      equal?))
+ 
+   (define (list-available-extensions trans locn)
+diff --git a/chicken.import.scm b/chicken.import.scm
+index baa7316..2839b16 100644
+--- a/chicken.import.scm
++++ b/chicken.import.scm
+@@ -201,6 +201,7 @@
+    repl
+    repl-prompt
+    repository-path
++   repository-extra-paths
+    require
+    reset
+    reset-handler
+diff --git a/eval.scm b/eval.scm
+index bbcd86c..838588d 100644
+--- a/eval.scm
++++ b/eval.scm
+@@ -81,6 +81,7 @@
+ (define-constant source-file-extension ".scm")
+ (define-constant setup-file-extension "setup-info")
+ (define-constant repository-environment-variable "CHICKEN_REPOSITORY")
++(define-constant repository-extra-environment-variable "CHICKEN_REPOSITORY_EXTRA")
+ (define-constant prefix-environment-variable "CHICKEN_PREFIX")
+ 
+ ; these are actually in unit extras, but that is used by default
+@@ -1180,6 +1181,25 @@
+ 
+ (define repository-path ##sys#repository-path)
+ 
++(define ##sys#repository-extra-paths
++  (let* ((repaths (get-environment-variable repository-extra-environment-variable))
++	 (repaths (if repaths
++		      (let ((len (string-length repaths)))
++			(let loop ((i 0) (offset 0) (res '()))
++			  (cond ((> i len)
++				 (reverse res))
++				((or (= i len) (eq? #\: (string-ref repaths i)))
++				 (loop (+ i 1) (+ i 1) (cons (substring repaths offset i) res)))
++				(else
++				 (loop (+ i 1) offset res)))))
++		      '())))
++    (lambda (#!optional val)
++      (if val
++	  (set! repaths val)
++	  repaths))))
++
++(define repository-extra-paths ##sys#repository-extra-paths)
++
+ (define ##sys#setup-mode #f)
+ 
+ (define ##sys#find-extension
+@@ -1197,6 +1217,7 @@
+ 	(let loop ((paths (##sys#append
+ 			   (if ##sys#setup-mode '(".") '())
+ 			   (if rp (list rp) '())
++			   (##sys#repository-extra-paths)
+ 			   (if inc? ##sys#include-pathnames '())
+ 			   (if ##sys#setup-mode '() '("."))) ))
+ 	  (and (pair? paths)
+@@ -1256,12 +1277,16 @@
+ 	[string-append string-append]
+ 	[read read] )
+     (lambda (id loc)
+-      (and-let* ((rp (##sys#repository-path)))
+-	(let* ((p (##sys#canonicalize-extension-path id loc))
+-	       (rpath (string-append rp "/" p ".")) )
+-	  (cond ((file-exists? (string-append rpath setup-file-extension))
+-		 => (cut with-input-from-file <> read) )
+-		(else #f) ) ) ) ) ))
++      (let loop ((rpaths (cons (##sys#repository-path) (##sys#repository-extra-paths))))
++	(and (pair? rpaths)
++	     (let ((rp (car rpaths)))
++	       (if (not rp)
++		   (loop (cdr rpaths))
++		   (let* ((p (##sys#canonicalize-extension-path id loc))
++			  (rpath (string-append rp "/" p ".")) )
++		     (cond ((file-exists? (string-append rpath setup-file-extension))
++			    => (cut with-input-from-file <> read) )
++			   (else (loop (cdr rpaths))) ) )) ))) ) ))
+ 
+ (define (extension-information ext)
+   (##sys#extension-information ext 'extension-information) )
+-- 
+2.1.0
+
diff --git a/pkgs/development/compilers/chicken/default.nix b/pkgs/development/compilers/chicken/default.nix
index 8fd99973cbc1..0e210343a72f 100644
--- a/pkgs/development/compilers/chicken/default.nix
+++ b/pkgs/development/compilers/chicken/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, makeWrapper, bootstrap-chicken ? null }:
 
 let
   version = "4.9.0.1";
@@ -8,18 +8,57 @@ let
     else if isBSD then "bsd"
     else if isSunOS then "solaris"
     else "linux";               # Should be a sane default
+  lib = stdenv.lib;
 in
 stdenv.mkDerivation {
   name = "chicken-${version}";
 
+  binaryVersion = 7;
+
   src = fetchurl {
     url = "http://code.call-cc.org/releases/4.9.0/chicken-${version}.tar.gz";
     sha256 = "0598mar1qswfd8hva9nqs88zjn02lzkqd8fzdd21dz1nki1prpq4";
   };
 
+  setupHook = lib.ifEnable (bootstrap-chicken != null) ./setup-hook.sh;
+  
   buildFlags = "PLATFORM=${platform} PREFIX=$(out) VARDIR=$(out)/var/lib";
   installFlags = "PLATFORM=${platform} PREFIX=$(out) VARDIR=$(out)/var/lib";
 
+  # We need a bootstrap-chicken to regenerate the c-files after
+  # applying a patch to add support for CHICKEN_REPOSITORY_EXTRA
+  patches = lib.ifEnable (bootstrap-chicken != null) [
+    ./0001-Introduce-CHICKEN_REPOSITORY_EXTRA.patch
+  ];
+
+  buildInputs = [
+    makeWrapper
+  ] ++ (lib.ifEnable (bootstrap-chicken != null) [
+    bootstrap-chicken
+  ]);
+
+  preBuild = lib.ifEnable (bootstrap-chicken != null) ''
+    # Backup the build* files - those are generated from hostname,
+    # git-tag, etc. and we don't need/want that
+    mkdir -p build-backup
+    mv buildid buildbranch buildtag.h build-backup
+
+    # Regenerate eval.c after the patch
+    make spotless $buildFlags
+
+    mv build-backup/* .
+  '';
+
+  postInstall = ''
+    for f in $out/bin/*
+    do
+      wrapProgram $f \
+        --prefix PATH : ${stdenv.gcc}/bin
+    done
+  '';
+
+  # TODO: Assert csi -R files -p '(pathname-file (repository-path))' == binaryVersion
+
   meta = {
     homepage = http://www.call-cc.org/;
     license = "BSD";
diff --git a/pkgs/development/compilers/chicken/eggDerivation.nix b/pkgs/development/compilers/chicken/eggDerivation.nix
new file mode 100644
index 000000000000..97ce9d9be79b
--- /dev/null
+++ b/pkgs/development/compilers/chicken/eggDerivation.nix
@@ -0,0 +1,46 @@
+{ stdenv, fetchegg, chicken, makeWrapper }:
+{ name, src
+, buildInputs ? []
+, chickenInstallFlags ? []
+, cscOptions          ? []
+, ...} @ args:
+
+let
+  libPath = "${chicken}/var/lib/chicken/${toString chicken.binaryVersion}/";
+  overrides = import ./overrides.nix;
+  lib = stdenv.lib;
+  baseName = (builtins.parseDrvName name).name;
+  override = if builtins.hasAttr baseName overrides
+   then
+     builtins.getAttr baseName overrides
+   else
+     {};
+in
+stdenv.mkDerivation ({
+  name = "chicken-${name}";
+  propagatedBuildInputs = buildInputs ++ [ chicken ];
+  propagatedUserEnvPkgs = buildInputs ++ [ chicken ];
+  buildInputs = [ makeWrapper ];
+
+  CSC_OPTIONS = stdenv.lib.concatStringsSep " " cscOptions;
+
+  CHICKEN_REPOSITORY = libPath;
+  CHICKEN_INSTALL_PREFIX = "$out";
+
+  installPhase = ''
+    runHook preInstall
+
+    chicken-install -p $out ${stdenv.lib.concatStringsSep " " chickenInstallFlags}
+
+    for f in $out/bin/*
+    do
+      wrapProgram $f \
+        --set CHICKEN_REPOSITORY $CHICKEN_REPOSITORY \
+        --prefix CHICKEN_REPOSITORY_EXTRA : "$out/lib/chicken/${toString chicken.binaryVersion}/:$CHICKEN_REPOSITORY_EXTRA" \
+        --prefix CHICKEN_INCLUDE_PATH \; \"$CHICKEN_INCLUDE_PATH\;$out/share/\" \
+        --prefix PATH : "$out/bin:${chicken}/bin:$CHICKEN_REPOSITORY_EXTRA:$CHICKEN_REPOSITORY"
+    done
+
+    runHook postInstall
+  '';
+} // (builtins.removeAttrs args ["name" "buildInputs"]) // override)
diff --git a/pkgs/development/compilers/chicken/overrides.nix b/pkgs/development/compilers/chicken/overrides.nix
new file mode 100644
index 000000000000..9fdda9b6d9fe
--- /dev/null
+++ b/pkgs/development/compilers/chicken/overrides.nix
@@ -0,0 +1,10 @@
+{
+  setup-helper = {
+    preBuild = ''
+      substituteInPlace setup-helper.setup \
+        --replace "(chicken-home)" \"$out/share/\"
+
+        cat setup-helper.setup
+    '';
+  };
+}
diff --git a/pkgs/development/compilers/chicken/setup-hook.sh b/pkgs/development/compilers/chicken/setup-hook.sh
new file mode 100644
index 000000000000..8d6b990a7e05
--- /dev/null
+++ b/pkgs/development/compilers/chicken/setup-hook.sh
@@ -0,0 +1,7 @@
+addChickenRepositoryPath() {
+    addToSearchPathWithCustomDelimiter : CHICKEN_REPOSITORY_EXTRA "$1/lib/chicken/7/"
+    # addToSearchPathWithCustomDelimiter \; CHICKEN_INCLUDE_PATH "$1/share/"
+    export CHICKEN_INCLUDE_PATH="$1/share;$CHICKEN_INCLUDE_PATH"
+}
+
+envHooks=(${envHooks[@]} addChickenRepositoryPath)
diff --git a/pkgs/development/tools/egg2nix/chicken-eggs.nix b/pkgs/development/tools/egg2nix/chicken-eggs.nix
new file mode 100644
index 000000000000..4ec9e0daa47a
--- /dev/null
+++ b/pkgs/development/tools/egg2nix/chicken-eggs.nix
@@ -0,0 +1,296 @@
+{ pkgs, stdenv }:
+rec {
+  inherit (pkgs) eggDerivation fetchegg;
+
+  base64 = eggDerivation {
+    name = "base64-3.3.1";
+
+    src = fetchegg {
+      name = "base64";
+      version = "3.3.1";
+      sha256 = "0wmldiwwg1jpcn07wb906nc53si5j7sa83wgyq643xzqcx4v4x1d";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  blob-utils = eggDerivation {
+    name = "blob-utils-1.0.3";
+
+    src = fetchegg {
+      name = "blob-utils";
+      version = "1.0.3";
+      sha256 = "17vdn02fnxnjx5ixgqimln93lqvzyq4y9w02fw7xnbdcjzqm0xml";
+    };
+
+    buildInputs = [
+      setup-helper
+      string-utils
+    ];
+  };
+
+  check-errors = eggDerivation {
+    name = "check-errors-1.13.0";
+
+    src = fetchegg {
+      name = "check-errors";
+      version = "1.13.0";
+      sha256 = "12a0sn82n98jybh72zb39fdddmr5k4785xglxb16750fhy8rmjwi";
+    };
+
+    buildInputs = [
+      setup-helper
+    ];
+  };
+
+  defstruct = eggDerivation {
+    name = "defstruct-1.6";
+
+    src = fetchegg {
+      name = "defstruct";
+      version = "1.6";
+      sha256 = "0lsgl32nmb5hxqiii4r3292cx5vqh50kp6v062nfiyid9lhrj0li";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  http-client = eggDerivation {
+    name = "http-client-0.7.1";
+
+    src = fetchegg {
+      name = "http-client";
+      version = "0.7.1";
+      sha256 = "1s03zgmb7kb99ld0f2ylqgicrab9qgza53fkgsqvg7bh5njmzhxr";
+    };
+
+    buildInputs = [
+      intarweb
+      uri-common
+      message-digest
+      md5
+      string-utils
+      sendfile
+    ];
+  };
+
+  intarweb = eggDerivation {
+    name = "intarweb-1.3";
+
+    src = fetchegg {
+      name = "intarweb";
+      version = "1.3";
+      sha256 = "0izlby78c25py29bdcbc0vapb6h7xgchqrzi6i51d0rb3mnwy88h";
+    };
+
+    buildInputs = [
+      defstruct
+      uri-common
+      base64
+    ];
+  };
+
+  lookup-table = eggDerivation {
+    name = "lookup-table-1.13.5";
+
+    src = fetchegg {
+      name = "lookup-table";
+      version = "1.13.5";
+      sha256 = "1nzly6rhynawlvzlyilk8z8cxz57cf9n5iv20glkhh28pz2izmrb";
+    };
+
+    buildInputs = [
+      setup-helper
+      check-errors
+      miscmacros
+      record-variants
+      synch
+    ];
+  };
+
+  matchable = eggDerivation {
+    name = "matchable-3.3";
+
+    src = fetchegg {
+      name = "matchable";
+      version = "3.3";
+      sha256 = "07y3lpzgm4djiwi9y2adc796f9kwkmdr28fkfkw65syahdax8990";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  md5 = eggDerivation {
+    name = "md5-3.1.0";
+
+    src = fetchegg {
+      name = "md5";
+      version = "3.1.0";
+      sha256 = "0bka43nx8x9b0b079qpvml2fl20km19ny0qjmhwzlh6rwmzazj2a";
+    };
+
+    buildInputs = [
+      message-digest
+    ];
+  };
+
+  message-digest = eggDerivation {
+    name = "message-digest-3.1.0";
+
+    src = fetchegg {
+      name = "message-digest";
+      version = "3.1.0";
+      sha256 = "1w6bax19dwgih78vcimiws0rja7qsd8hmbm6qqg2hf9cw3vab21s";
+    };
+
+    buildInputs = [
+      setup-helper
+      miscmacros
+      check-errors
+      variable-item
+      blob-utils
+      string-utils
+    ];
+  };
+
+  miscmacros = eggDerivation {
+    name = "miscmacros-2.96";
+
+    src = fetchegg {
+      name = "miscmacros";
+      version = "2.96";
+      sha256 = "1ajdgjrni10i2hmhcp4rawnxajjxry3kmq1krdmah4sf0kjrgajc";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  record-variants = eggDerivation {
+    name = "record-variants-0.5.1";
+
+    src = fetchegg {
+      name = "record-variants";
+      version = "0.5.1";
+      sha256 = "15wgysxkm8m4hx9nhhw9akchzipdnqc7yj3qd3zn0z7sxg4sld1h";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  sendfile = eggDerivation {
+    name = "sendfile-1.7.29";
+
+    src = fetchegg {
+      name = "sendfile";
+      version = "1.7.29";
+      sha256 = "1dc02cbkx5kixhbqjy26g6gs680vy7krc9qis1p1v4aa0b2lgj7k";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  setup-helper = eggDerivation {
+    name = "setup-helper-1.5.4";
+
+    src = fetchegg {
+      name = "setup-helper";
+      version = "1.5.4";
+      sha256 = "1k644y0md2isdcvazqfm4nyc8rh3dby6b0j3r4na4w8ryspqp6gj";
+    };
+
+    buildInputs = [
+      
+    ];
+  };
+
+  string-utils = eggDerivation {
+    name = "string-utils-1.2.4";
+
+    src = fetchegg {
+      name = "string-utils";
+      version = "1.2.4";
+      sha256 = "07alvghg0dahilrm4jg44bndl0x69sv1zbna9l20cbdvi35i0jp1";
+    };
+
+    buildInputs = [
+      setup-helper
+      miscmacros
+      lookup-table
+      check-errors
+    ];
+  };
+
+  synch = eggDerivation {
+    name = "synch-2.1.2";
+
+    src = fetchegg {
+      name = "synch";
+      version = "2.1.2";
+      sha256 = "1m9mnbq0m5jsxmd1a3rqpwpxj0l1b7vn1fknvxycc047pmlcyl00";
+    };
+
+    buildInputs = [
+      setup-helper
+      check-errors
+    ];
+  };
+
+  uri-common = eggDerivation {
+    name = "uri-common-1.4";
+
+    src = fetchegg {
+      name = "uri-common";
+      version = "1.4";
+      sha256 = "01ds1gixcn4rz657x3hr4rhw2496hsjff42ninw0k39l8i1cbh7c";
+    };
+
+    buildInputs = [
+      uri-generic
+      defstruct
+      matchable
+    ];
+  };
+
+  uri-generic = eggDerivation {
+    name = "uri-generic-2.41";
+
+    src = fetchegg {
+      name = "uri-generic";
+      version = "2.41";
+      sha256 = "1r5jbzjllbnmhm5n0m3fcx0g6dc2c2jzp1dcndkfmxz0cl99zxac";
+    };
+
+    buildInputs = [
+      matchable
+      defstruct
+    ];
+  };
+
+  variable-item = eggDerivation {
+    name = "variable-item-1.3.1";
+
+    src = fetchegg {
+      name = "variable-item";
+      version = "1.3.1";
+      sha256 = "19b3mhb8kr892sz9yyzq79l0vv28dgilw9cf415kj6aq16yp4d5n";
+    };
+
+    buildInputs = [
+      setup-helper
+      check-errors
+    ];
+  };
+}
+
diff --git a/pkgs/development/tools/egg2nix/chicken-eggs.scm b/pkgs/development/tools/egg2nix/chicken-eggs.scm
new file mode 100644
index 000000000000..d847ae9e29b9
--- /dev/null
+++ b/pkgs/development/tools/egg2nix/chicken-eggs.scm
@@ -0,0 +1,5 @@
+;; Eggs used by egg2nix
+http-client
+intarweb
+matchable
+uri-common
diff --git a/pkgs/development/tools/egg2nix/default.nix b/pkgs/development/tools/egg2nix/default.nix
new file mode 100644
index 000000000000..dd1c00116e4d
--- /dev/null
+++ b/pkgs/development/tools/egg2nix/default.nix
@@ -0,0 +1,27 @@
+{ stdenv, eggDerivation, fetchurl, chickenEggs }:
+
+# Note: This mostly reimplements the default.nix already contained in
+# the tarball. Is there a nicer way than duplicating code?
+
+let
+  version = "0.4";
+in
+eggDerivation {
+  src = fetchurl {
+    url = "https://github.com/the-kenny/egg2nix/archive/${version}.tar.gz";
+    sha256 = "1xn79fgqxg0i47asjah31zi56v60is1n8d0cy8w4gbj0i41z7pvm";
+  };
+
+  name = "egg2nix-${version}";
+  buildInputs = with chickenEggs; [
+    matchable http-client
+  ];
+
+  meta = {
+    description = "Generate nix-expression from CHICKEN scheme eggs";
+    homepage = https://github.com/the-kenny/egg2nix;
+    license = stdenv.lib.licenses.bsd3;
+    platforms = stdenv.lib.platforms.unix;
+    maintainers = [ stdenv.lib.maintainers.the-kenny ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 6e3c34766d79..df750af3301a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2831,7 +2831,17 @@ let
 
   bigloo = callPackage ../development/compilers/bigloo { };
 
-  chicken = callPackage ../development/compilers/chicken { };
+  fetchegg = callPackage ../build-support/fetchegg { };
+
+  eggDerivation = callPackage ../development/compilers/chicken/eggDerivation.nix { };
+
+  chicken = callPackage ../development/compilers/chicken {
+    bootstrap-chicken = chicken.override { bootstrap-chicken = null; }; 
+  };
+
+  egg2nix = callPackage ../development/tools/egg2nix {
+    chickenEggs = callPackage ../development/tools/egg2nix/chicken-eggs.nix { };
+  };
 
   ccl = builderDefsPackage ../development/compilers/ccl {};