diff --git a/system b/system
deleted file mode 160000
index 5a543f5..0000000
--- a/system
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 5a543f51e99f79b7ee22e19fd235f5f75da4f5a4
diff --git a/system-new/AUTHOR b/system-new/AUTHOR
new file mode 100644
index 0000000..44dbcb1
--- /dev/null
+++ b/system-new/AUTHOR
@@ -0,0 +1 @@
+Retropikzel
diff --git a/system-new/Jenkinsfile b/system-new/Jenkinsfile
new file mode 100644
index 0000000..1fa81ae
--- /dev/null
+++ b/system-new/Jenkinsfile
@@ -0,0 +1,34 @@
+pipeline {
+    agent any
+
+    options {
+        disableConcurrentBuilds()
+        buildDiscarder(logRotator(numToKeepStr: '10', artifactNumToKeepStr: '10'))
+    }
+
+    stages {
+        stage('Tests') {
+            steps {
+                script {
+                    def implementations = sh(script: 'docker run retropikzel1/compile-r7rs:chibi sh -c "compile-r7rs --list-r7rs-schemes"', returnStdout: true).split()
+
+                    parallel implementations.collectEntries { SCHEME ->
+                        [(SCHEME): {
+                            stage("${SCHEME}") {
+                                catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
+                                    if("${SCHEME}" == "chicken") {
+                                        DOCKERIMG="chicken:5"
+                                    } else {
+                                        DOCKERIMG="${SCHEME}:head"
+                                    }
+                                    sh "docker build --build-arg IMAGE=${DOCKERIMG} --build-arg SCHEME=${SCHEME} --tag=foreign-c-system-test-${SCHEME} -f Dockerfile.test ."
+                                    sh "docker run -v ${WORKSPACE}:/workdir -w /workdir -t foreign-c-system-test-${SCHEME} sh -c \"timeout 120 make SCHEME=${SCHEME} clean all force-install test\""
+                                }
+                            }
+                        }]
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/system-new/LICENSE b/system-new/LICENSE
new file mode 100644
index 0000000..0a04128
--- /dev/null
+++ b/system-new/LICENSE
@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+  A "Combined Work" is a work produced by combining or linking an
+Application with the Library.  The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+  The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+  The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.
diff --git a/system-new/Makefile b/system-new/Makefile
new file mode 100644
index 0000000..01ff3f6
--- /dev/null
+++ b/system-new/Makefile
@@ -0,0 +1,11 @@
+VERSION=1.1.2
+build:
+	snow-chibi package \
+		--version=${VERSION} \
+		--authors="Retropikzel" \
+		--doc=README.html \
+		--description="Library for running shell commands" \
+	retropikzel/system.sld
+
+package-name:
+	@echo "retropikzel-system-${VERSION}
diff --git a/system-new/README.md b/system-new/README.md
new file mode 100644
index 0000000..4e35628
--- /dev/null
+++ b/system-new/README.md
@@ -0,0 +1,33 @@
+Execute a shell command.
+
+Built upon [(foreign c)](https://sr.ht/~retropikzel/foreign-c/).
+
+[Repository](https://git.sr.ht/~retropikzel/foreign-c-system)
+
+[Issue tracker](https://sr.ht/~retropikzel/foreign-c/trackers)
+
+[Maling lists](https://sr.ht/~retropikzel/foreign-c/lists)
+
+[Jenkins](https://jenkins.scheme.org/job/retropikzel/job/foreign-c-system/)
+
+
+(**system** _command_)
+
+_command_ is a string containing the command you want to run.
+
+Returns the exit code of the command.
+
+Example:
+
+    (import (scheme base)
+            (scheme write)
+            (scheme file)
+            (retropikzel system))
+
+    (define testfile "test.txt")
+    (system (apply string-append `("echo \"Hello\" > " ,testfile)))
+
+    (define text (with-input-from-file testfile (lambda () (read-line))))
+    (display text)
+    (newline)
+
diff --git a/system-new/VERSION b/system-new/VERSION
new file mode 100644
index 0000000..45a1b3f
--- /dev/null
+++ b/system-new/VERSION
@@ -0,0 +1 @@
+1.1.2
diff --git a/system-new/retropikzel/system.scm b/system-new/retropikzel/system.scm
new file mode 100644
index 0000000..04644ec
--- /dev/null
+++ b/system-new/retropikzel/system.scm
@@ -0,0 +1,8 @@
+(define-c-library libc '("stdlib.h") libc-name '((additional-versions ("6"))))
+(define-c-procedure c-system libc 'system 'int '(pointer))
+
+(define (system command)
+  (let* ((command-pointer (string->c-utf8 command))
+         (result (c-system command-pointer)))
+    (c-free command-pointer)
+    result))
diff --git a/system-new/retropikzel/system.sld b/system-new/retropikzel/system.sld
new file mode 100644
index 0000000..5cb61a4
--- /dev/null
+++ b/system-new/retropikzel/system.sld
@@ -0,0 +1,7 @@
+(define-library
+  (retropikzel system)
+  (import (scheme base)
+          (scheme write)
+          (foreign c))
+  (export system)
+  (include "system.scm"))
diff --git a/system-new/test.scm b/system-new/test.scm
new file mode 100644
index 0000000..c84e363
--- /dev/null
+++ b/system-new/test.scm
@@ -0,0 +1,25 @@
+(import (scheme base)
+        (scheme write)
+        (scheme file)
+        (scheme process-context)
+        (foreign c)
+        (retropikzel system)
+        (srfi 64))
+
+(test-begin "foreign-c-system")
+
+(define testfile "/tmp/foreign-c-system-test.txt")
+
+(define exit-code1 (system (apply string-append `("echo \"Hello\" > " ,testfile))))
+
+(test-assert (= exit-code1 0))
+
+(define text (with-input-from-file testfile (lambda () (read-line))))
+
+(test-assert (string=? text "Hello"))
+
+(define exit-code2 (system "no-such-command"))
+
+(test-assert (not (= exit-code1 0)))
+
+(test-end "foreign-c-system")