diff --git a/gnu/packages/chicken.scm b/gnu/packages/chicken.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2020 Ekaitz Zarraga <ekaitz@elenq.tech>
+;;; Copyright © 2020 Evan Hanson <evhan@foldling.org>
+;;; Copyright © 2020 raingloom <raingloom@riseup.net>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages chicken)
+  #:use-module (gnu packages)
+  #:use-module (guix packages)
+  #:use-module (guix build-system chicken)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix download)
+  #:use-module (guix git-download)
+  #:use-module (guix svn-download)
+  #:use-module (gnu packages commencement)
+  #:use-module ((guix licenses)
+                #:prefix license:))
+
+(define-public chicken
+  (package
+    (name "chicken")
+    (version "5.3.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://code.call-cc.org/releases/"
+                                  version "/chicken-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1yl0hxm9cirgcp8jgxp6vv29lpswfvaw3zfkh6rsj0vkrv44k4c1"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:modules ((guix build gnu-build-system)
+                  (guix build utils)
+                  (srfi srfi-1))
+
+       ;; No `configure' script; run "make check" after "make install" as
+       ;; prescribed by README.
+       #:phases
+       (modify-phases %standard-phases
+         (delete 'configure)
+         (delete 'check)
+         (add-after 'install 'check
+           (assoc-ref %standard-phases 'check)))
+
+       #:make-flags (let ((out (assoc-ref %outputs "out")))
+                      (list "PLATFORM=linux"
+                            (string-append "PREFIX=" out)
+                            (string-append "VARDIR=" out "/var/lib")))
+
+       ;; Parallel builds are not supported, as noted in README.
+       #:parallel-build? #f))
+    (native-search-paths
+     (list (search-path-specification
+            (variable "CHICKEN_REPOSITORY_PATH")
+            ;; TODO extract binary version into a module level definition.
+            (files (list "var/lib/chicken/11")))))
+    (propagated-inputs (list gcc-toolchain))
+    (home-page "https://www.call-cc.org/")
+    (synopsis "R5RS Scheme implementation that compiles native code via C")
+    (description
+     "CHICKEN is a compiler for the Scheme programming language.  CHICKEN
+produces portable and efficient C, supports almost all of the R5RS Scheme
+language standard, and includes many enhancements and extensions.")
+    (license license:bsd-3)))
+
+(define-public chicken-compile-file
+  (package
+    (name "chicken-compile-file")
+    (version "1.3")
+    (source (origin
+              (method url-fetch)
+              (uri (egg-uri "compile-file" version))
+              (sha256
+               (base32
+                "1029i5ifr48vb3clvl8n50iq23rzc42szdcsl9320qmj1ksg9y93"))))
+    (build-system chicken-build-system)
+    (arguments `(#:egg-name "compile-file"))
+    (home-page "https://wiki.call-cc.org/egg/compile-file")
+    (synopsis "Programmatic compiler invocation")
+    (description "This egg provides a way to do on-the-fly compilation of
+source code and load it into the running process.")
+    (license license:bsd-3)))
+
+(define-public chicken-srfi-1
+  (package
+    (name "chicken-srfi-1")
+    (version "0.5.1")
+    (source
+     (origin
+       (method svn-fetch)
+       (uri (svn-reference
+             (url (string-append
+                   "https://code.call-cc.org/svn/chicken-eggs/"
+                   "release/5/srfi-1/tags/"
+                   version))
+             (revision 39055)
+             (user-name "anonymous")
+             (password "")))
+       (file-name (string-append "chicken-srfi-1" version "-checkout"))
+       (sha256
+        (base32
+         "02940zsjrmn7c34rnp1rllm2nahh9jvszlzrw8ak4pf31q09cmq1"))))
+    (build-system chicken-build-system)
+    (arguments '(#:egg-name "srfi-1"))
+    (inputs
+     (list chicken-test))
+    (home-page "https://wiki.call-cc.org/eggref/5/srfi-1")
+    (synopsis "SRFI-1 list library")
+    (description
+     "The list library defined in
+@uref{https://srfi.schemers.org/srfi-1/srfi-1.html, SRFI-1} contains a lot of
+useful list processing procedures for construction, examining, destructuring
+and manipulating lists and pairs.")
+    (license license:bsd-3)))
+
+(define-public chicken-srfi-13
+  (package
+    (name "chicken-srfi-13")
+    (version "0.3.2")
+    (source (origin
+              (method url-fetch)
+              (uri (egg-uri "srfi-13" version))
+              (sha256
+               (base32
+                "18clbmaampaxivwx9bya9fxnkzqbczhlz0kbs9bfapm77mxkwclc"))))
+    (build-system chicken-build-system)
+    (arguments '(#:egg-name "srfi-13"))
+    (native-inputs (list chicken-test))
+    (propagated-inputs (list chicken-srfi-14))
+    (home-page "https://wiki.call-cc.org/egg/srfi-13")
+    (synopsis "SRFI-13 string library for Chicken scheme")
+    (description "This package provides the SRFI-13 string library for Chicken
+scheme.")
+    (license license:bsd-3)))
+
+(define-public chicken-srfi-14
+  (package
+    (name "chicken-srfi-14")
+    (version "0.2.1")
+    (source
+     (origin
+       (method svn-fetch)
+       (uri (svn-reference
+             (url (string-append "https://code.call-cc.org/svn/chicken-eggs/"
+                                 "release/5/srfi-14/tags/" version))
+             (revision 39057)
+             (user-name "anonymous")
+             (password "")))
+       (file-name (string-append "chicken-srfi-14-" version "-checkout"))
+       (sha256
+        (base32
+         "0wjsqfwawh9bx6vvii1gwag166bxkflc0ib374fbws14914g2ac1"))))
+    (build-system chicken-build-system)
+    (arguments '(#:egg-name "srfi-14"))
+    (home-page "https://wiki.call-cc.org/eggref/5/srfi-14")
+    (synopsis "Character set library")
+    (description
+     "Character sets can be created, extended, tested for the membership of
+a characters and be compared to other character sets")
+    (license (license:non-copyleft
+              "http://wiki.call-cc.org/eggref/5/srfi-14#license"))))
+
+(define-public chicken-srfi-18
+  (package
+    (name "chicken-srfi-18")
+    (version "0.1.6")
+    (source (origin
+              (method url-fetch)
+              (uri (egg-uri "srfi-18" version))
+              (sha256
+               (base32
+                "0v2pkdck0ji1wiqgg8sg4z6rbkj2qw4vy4b9lx0w0pmhlxqpg1xd"))))
+    (build-system chicken-build-system)
+    (arguments
+     `(#:egg-name "srfi-18"))
+    (native-inputs (list chicken-compile-file))
+    (home-page "https://wiki.call-cc.org/egg/srfi-18")
+    (synopsis "Multithreading package, largely following SRFI-18")
+    (description "The threads implemented in CHICKEN are so called \"green\"
+threads, based on first-class continuations.  Native threads that map directly
+to the threads provided by the operating system are not supported.  The
+advantage of this is that threads are very lightweight and somewhat larger
+degree of determinism.  The disadvantage is that execution of Scheme code on
+multiple processor cores is not available.")
+    (license license:bsd-3)))
+
+(define-public chicken-srfi-69
+  (package
+    (name "chicken-srfi-69")
+    (version "0.4.1")
+    (source
+     (origin
+       (method svn-fetch)
+       (uri (svn-reference
+             (url (string-append "https://code.call-cc.org/svn/chicken-eggs/"
+                                 "release/5/srfi-69/tags/"
+                                 version))
+             (revision 39057)
+             (user-name "anonymous")
+             (password "")))
+       (file-name (string-append "chicken-srfi-69-" version "-checkout"))
+       (sha256
+        (base32
+         "1z0m9vmg9bj9z0a941pls6igvg8nmhq4mj5psjjidbp0fac572mp"))))
+    (arguments '(#:egg-name "srfi-69"))
+    (build-system chicken-build-system)
+    (home-page "https://wiki.call-cc.org/eggref/5/srfi-69")
+    (synopsis "Implementation of SRFI 69 with SRFI 90 extensions")
+    (description
+     "This package provides an implementation of
+@uref{https://srfi.schemers.org/srfi-69/srfi-69.html, SRFI-69 hash tables} for
+CHICKEN Scheme, along with
+@uref{https://srfi.schemers.org/srfi-90/srfi-90.html, SRFI-90} extensions.")
+    (license license:bsd-3)))
+
+(define-public chicken-agrep
+  (package
+    (name "chicken-agrep")
+    (version "1.7")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/iraikov/chicken-agrep")
+             (commit version)))
+       (file-name (string-append "chicken-agrep-" version "-checkout"))
+       (sha256
+        (base32
+         "0z05x7f154n9bgmainrsmncf5i6dil43r9ymr3rdgwbg4wnxmz4s"))))
+    ;; TODO do we really have to make these propagated?
+    ;; I don't know Chicken's module system well enough to tell
+    (propagated-inputs
+     (list chicken-datatype chicken-srfi-1 chicken-srfi-14))
+    (inputs
+     (list chicken-test))
+    (build-system chicken-build-system)
+    (arguments '(#:egg-name "agrep"))
+    (synopsis "Approximate string matching library")
+    (home-page "https://wiki.call-cc.org/eggref/5/agrep")
+    (description
+     "This library implements the Wu-Manber algorithm for approximate string
+searching with errors, popularized by the agrep Unix command and the glimpse
+file indexing tool.")
+    (license license:gpl3+)))
+
+(define-public chicken-datatype
+  (package
+    (name "chicken-datatype")
+    (version "1.6")
+    (source
+     (origin
+       (method svn-fetch)
+       (uri (svn-reference
+             (url (string-append "https://code.call-cc.org/svn/chicken-eggs/"
+                                 "release/5/datatype/tags/" version))
+             (revision 39266)
+             (user-name "anonymous")
+             (password "")))
+       (file-name (string-append "chicken-datatype-" version "-checkout"))
+       (sha256
+        (base32
+         "1a58q8ypjkjz6wdv25247wixds4179239d36nnvsfn6gp70s9jfq"))))
+    (build-system chicken-build-system)
+    (arguments '(#:egg-name "datatype"))
+    (inputs
+     (list chicken-srfi-1 chicken-test))
+    (home-page "https://wiki.call-cc.org/eggref/5/datatype")
+    (synopsis "Facility for creating and using variant records")
+    (description
+     "This CHICKEN Scheme library provides a facility for creating and using
+variant records, as described in the book @i{Essentials of Programming
+Languages} by Friedman, Wand, and Haynes.")
+    (license license:bsd-3)))
+
+(define-public chicken-iset
+  (package
+    (name "chicken-iset")
+    (version "2.2")
+    (source
+     (origin
+       (method svn-fetch)
+       (uri (svn-reference
+             (url (string-append "https://code.call-cc.org/svn/chicken-eggs/"
+                                 "release/5/iset/tags/" version))
+             (revision 39057)
+             (user-name "anonymous")
+             (password "")))
+       (file-name (string-append "chicken-iset-" version "-checkout"))
+       (sha256
+        (base32
+         "0gz50n5i561n5sk9prry0lrxz6bfrq9if5bclaq6a0f7lzinhnzb"))))
+    (inputs
+     (list chicken-test))
+    (build-system chicken-build-system)
+    (arguments '(#:egg-name "iset"))
+    (synopsis "Integer set library")
+    (home-page "https://wiki.call-cc.org/eggref/5/iset")
+    (description
+     "This ``integer set'' CHICKEN Scheme library implements bit vectors.
+Bit-vectors provide an abstract interface to bitwise operations typically done
+with integers.")
+    (license license:bsd-3)))
+
+(define-public chicken-test
+  (package
+    (name "chicken-test")
+    (version "1.1")
+    (source
+     (origin
+       (method svn-fetch)
+       (uri (svn-reference
+             (url (string-append "https://code.call-cc.org/svn/chicken-eggs/"
+                                 "release/5/test/tags/" version))
+             (revision 39263)
+             (user-name "anonymous")
+             (password "")))
+       (file-name (string-append "chicken-test-" version "-checkout"))
+       (sha256
+        (base32
+         "14i91cxsn6hjkx6kqf7i9syck73cw71jik61jmhg87vpxx5kfnzx"))))
+    (build-system chicken-build-system)
+    (arguments '(#:egg-name "test"))
+    (home-page "https://wiki.call-cc.org/eggref/5/test")
+    (synopsis "Yet another testing utility")
+    (description
+     "This package provides a simple testing utility for CHICKEN Scheme.")
+    (license license:bsd-3)))
+
+(define-public chicken-crypto-tools
+  (package
+    (name "chicken-crypto-tools")
+    (version "1.4")
+    (source (origin
+              (method url-fetch)
+              (uri (egg-uri "crypto-tools" version))
+              (sha256
+               (base32
+                "0ajf0qfnhp99f4x1dll2fhlxrsxamgrrwyksc7rrym77xmv8f1pd"))))
+    (build-system chicken-build-system)
+    (arguments '(#:egg-name "crypto-tools"))
+    (home-page "https://wiki.call-cc.org/egg/crypto-tools")
+    (synopsis "Useful cryptographic primitives")
+    (description "The crypto-tools egg implements useful cryptographic
+primitives.  More specifically, provided are:
+
+@itemize
+@item binary blobs
+@itemize
+@item marshallers to and from hex strings
+@item blob xor
+@item blob padding using either PKCS#5 or ISO7816-4
+@end itemize
+@item Block cipher modes of operation
+@itemize
+@item CBC with or without incorporated encrypted IV in the ciphertext
+@item CTR with or without incorporated IV in the ciphertext
+@end itemize
+@end itemize")
+    (license license:bsd-3)))