diff --git a/pkgs/development/compilers/chicken/4/eggs.nix b/pkgs/development/compilers/chicken/4/eggs.nix
index 1f786f127c91..6e6f104f8a0c 100644
--- a/pkgs/development/compilers/chicken/4/eggs.nix
+++ b/pkgs/development/compilers/chicken/4/eggs.nix
@@ -1,4 +1,4 @@
-{ pkgs }:
+{ pkgs, stdenv }:
 rec {
   inherit (pkgs) eggDerivation fetchegg;
 
@@ -16,35 +16,6 @@ rec {
     ];
   };
 
-  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";
 
@@ -60,31 +31,29 @@ rec {
   };
 
   http-client = eggDerivation {
-    name = "http-client-0.7.1";
+    name = "http-client-0.18";
 
     src = fetchegg {
       name = "http-client";
-      version = "0.7.1";
-      sha256 = "1s03zgmb7kb99ld0f2ylqgicrab9qgza53fkgsqvg7bh5njmzhxr";
+      version = "0.18";
+      sha256 = "1b9x66kfcglld4xhm06vba00gw37vr07c859kj7lmwnk9nwhcplg";
     };
 
     buildInputs = [
       intarweb
       uri-common
-      message-digest
-      md5
-      string-utils
+      simple-md5
       sendfile
     ];
   };
 
   intarweb = eggDerivation {
-    name = "intarweb-1.3";
+    name = "intarweb-1.7";
 
     src = fetchegg {
       name = "intarweb";
-      version = "1.3";
-      sha256 = "0izlby78c25py29bdcbc0vapb6h7xgchqrzi6i51d0rb3mnwy88h";
+      version = "1.7";
+      sha256 = "1arjgn5g4jfdzj3nlrhxk235qwf6k6jxr14yhnncnfbgdb820xp8";
     };
 
     buildInputs = [
@@ -94,92 +63,13 @@ rec {
     ];
   };
 
-  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";
+    name = "matchable-3.7";
 
     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";
+      version = "3.7";
+      sha256 = "1vc9rpb44fhn0n91hzglin986dw9zj87fikvfrd7j308z22a41yh";
     };
 
     buildInputs = [
@@ -188,12 +78,12 @@ rec {
   };
 
   sendfile = eggDerivation {
-    name = "sendfile-1.7.29";
+    name = "sendfile-1.8.3";
 
     src = fetchegg {
       name = "sendfile";
-      version = "1.7.29";
-      sha256 = "1dc02cbkx5kixhbqjy26g6gs680vy7krc9qis1p1v4aa0b2lgj7k";
+      version = "1.8.3";
+      sha256 = "036x4xdndx7qly94afnag5b9idd1yymdm8d832w2cy054y7lxqsi";
     };
 
     buildInputs = [
@@ -201,13 +91,13 @@ rec {
     ];
   };
 
-  setup-helper = eggDerivation {
-    name = "setup-helper-1.5.4";
+  simple-md5 = eggDerivation {
+    name = "simple-md5-0.0.1";
 
     src = fetchegg {
-      name = "setup-helper";
-      version = "1.5.4";
-      sha256 = "1k644y0md2isdcvazqfm4nyc8rh3dby6b0j3r4na4w8ryspqp6gj";
+      name = "simple-md5";
+      version = "0.0.1";
+      sha256 = "1h0b51p9wl1dl3pzs39hdq3hk2qnjgn8n750bgmh0651g4lzmq3i";
     };
 
     buildInputs = [
@@ -215,38 +105,6 @@ rec {
     ];
   };
 
-  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";
 
@@ -264,32 +122,16 @@ rec {
   };
 
   uri-generic = eggDerivation {
-    name = "uri-generic-2.41";
+    name = "uri-generic-2.46";
 
     src = fetchegg {
       name = "uri-generic";
-      version = "2.41";
-      sha256 = "1r5jbzjllbnmhm5n0m3fcx0g6dc2c2jzp1dcndkfmxz0cl99zxac";
+      version = "2.46";
+      sha256 = "10ivf4xlmr6jcm00l2phq1y73hjv6g3qgr38ycc8rw56wv6sbm4g";
     };
 
     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/compilers/chicken/5/eggs.nix b/pkgs/development/compilers/chicken/5/eggs.nix
index a8e3ee5976e8..a35b1f058919 100644
--- a/pkgs/development/compilers/chicken/5/eggs.nix
+++ b/pkgs/development/compilers/chicken/5/eggs.nix
@@ -47,12 +47,12 @@ rec {
   };
 
   srfi-13 = eggDerivation {
-    name = "srfi-13-0.2.1";
+    name = "srfi-13-0.3";
 
     src = fetchegg {
       name = "srfi-13";
-      version = "0.2.1";
-      sha256 = "0204i7fhc4dy0l89lbi2lv9cjndrvwyrk68z3wy7x445jb4ky1gq";
+      version = "0.3";
+      sha256 = "0yaw9i6zhpxl1794pirh168clprjgmsb0xlr96drirjzsslgm3zp";
     };
 
     buildInputs = [