diff --git a/.gitignore b/.gitignore
index 5ebb457..90fd273 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,4 @@ example.sps
 example
 venv
 foreign
+tmp
diff --git a/Dockerfile b/Dockerfile.test
similarity index 88%
rename from Dockerfile
rename to Dockerfile.test
index 0cbb998..80ad7de 100644
--- a/Dockerfile
+++ b/Dockerfile.test
@@ -15,8 +15,6 @@ RUN make
 RUN make install
 WORKDIR /build/compile-scheme
 RUN make build-gauche
-WORKDIR /build
-RUN git clone https://codeberg.org/foreign-c/foreign-c.git --depth=2
 
 ARG SCHEME=chibi
 ARG IMAGE=${SCHEME}:head
@@ -35,12 +33,9 @@ WORKDIR /build/akku
 RUN bash install.sh
 ENV PATH=/root/.local/bin:${PATH}
 RUN akku update
-WORKDIR /build/foreign-c
 RUN timeout 30 snow-chibi install --impls=${SCHEME} --always-yes "(srfi 64)" || true
 RUN timeout 30 snow-chibi install --impls=${SCHEME} --always-yes "(foreign c)" || true
-RUN make SCHEME=${SCHEME} build install
 WORKDIR /workdir
-RUN cp -r /build/foreign-c/foreign .
 COPY Makefile .
 COPY retropikzel retropikzel/
 
diff --git a/Jenkinsfile b/Jenkinsfile
index 06ddb9b..0b25372 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -20,40 +20,28 @@ pipeline {
 
     stages {
         stage('Tests') {
-            parallel {
-                stage('R6RS') {
-                    steps {
-                        script {
-                            params.LIBRARIES.split().each { LIBRARY ->
-                            stage("${LIBRARY}") {
-                                    parallel params.R6RS_SCHEMES.split().collectEntries { SCHEME ->
-                                        [(SCHEME): {
-                                            def IMG="${SCHEME}:head"
-                                            catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
-                                                sh "timeout 600 make SCHEME=${SCHEME} LIBRARY=${LIBRARY} test-r6rs-docker"
-                                            }
-                                        }]
-                                    }
+            stage('R6RS') {
+                steps {
+                    script {
+                        params.LIBRARIES.split().each { LIBRARY ->
+                        stage("${LIBRARY}") {
+                            params.R6RS_SCHEMES.split().each { SCHEME ->
+                                catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
+                                    sh "timeout 600 make SCHEME=${SCHEME} LIBRARY=${LIBRARY} RNRS=r6rs run-test-docker"
                                 }
                             }
                         }
                     }
                 }
-                stage('R7RS') {
-                    steps {
-                        script {
-                            params.LIBRARIES.split().each { LIBRARY ->
-                                stage("${LIBRARY}") {
-                                    parallel params.R7RS_SCHEMES.split().collectEntries() { SCHEME ->
-                                        [(SCHEME): {
-                                            def IMG="${SCHEME}:head"
-                                            if("${SCHEME}" == "chicken") {
-                                                IMG="${SCHEME}:5"
-                                            }
-                                            catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
-                                                sh "timeout 600 make SCHEME=${SCHEME} LIBRARY=${LIBRARY} test-r7rs-docker"
-                                            }
-                                        }]
+            }
+            stage('R7RS') {
+                steps {
+                    script {
+                        params.LIBRARIES.split().each { LIBRARY ->
+                            stage("${LIBRARY}") {
+                                params.R7RS_SCHEMESsplit().each { SCHEME ->
+                                    catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
+                                        sh "timeout 600 make SCHEME=${SCHEME} LIBRARY=${LIBRARY} RNRS=r7rs run-test-docker"
                                     }
                                 }
                             }
diff --git a/Makefile b/Makefile
index 87d9b5e..3e836cf 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,6 @@ endif
 all: build
 
 build: retropikzel/${LIBRARY}/LICENSE retropikzel/${LIBRARY}/VERSION
-	rm -rf *.tgz
 	echo "<pre>$$(cat retropikzel/${LIBRARY}/README.md)</pre>" > ${README}
 	snow-chibi package --version=${VERSION} --authors=${AUTHOR} --doc=${README} --description="${DESCRIPTION}" ${LIBRARY_FILE}
 
@@ -31,9 +30,9 @@ install:
 uninstall:
 	-snow-chibi remove --impls=${SCHEME} ${PKG}
 
-init-venv: build
+run-test-venv: build
 	rm -rf venv
-	scheme-venv ${SCHEME} ${RNRS} venv
+	scheme-venv ${SCHEME} venv
 	echo "(import (scheme base) (scheme write) (scheme read) (scheme char) (scheme file) (scheme process-context) (srfi 64) (retropikzel ${LIBRARY}))" > venv/test.scm
 	printf "#!r6rs\n(import (except (rnrs) remove) (srfi :64) (retropikzel ${LIBRARY}))" > venv/test.sps
 	cat ${TESTFILE} >> venv/test.scm
@@ -48,12 +47,31 @@ init-venv: build
 	if [ "${SCHEME}" = "chicken" ]; then ./venv/bin/snow-chibi install --always-yes srfi.64; fi
 	if [ "${SCHEME}-${RNRS}" = "mosh-r7rs" ]; then ./venv/bin/snow-chibi install --always-yes srfi.64; fi
 	if [ "${RNRS}" = "r7rs" ]; then ./venv/bin/snow-chibi install ${PKG}; fi
-
-run-test: init-venv
 	if [ "${RNRS}" = "r6rs" ]; then ./venv/bin/scheme-compile venv/test.sps; fi
 	if [ "${RNRS}" = "r7rs" ]; then CSC_OPTIONS="-L -lcurl -L -lSDL2 -L -lSDL2_image" ./venv/bin/scheme-compile venv/test.scm; fi
 	./venv/test
 
+run-test-system: build
+	rm -rf tmp
+	mkdir -p tmp
+	printf "#!r6rs\n(import (except (rnrs) remove) (srfi :64) (retropikzel ${LIBRARY}))" > tmp/test.sps
+	cat ${TESTFILE} >> tmp/test.sps
+	echo "(import (scheme base) (scheme write) (scheme read) (scheme char) (scheme file) (scheme process-context) (srfi 64) (retropikzel ${LIBRARY}))" > tmp/test.scm
+	cat ${TESTFILE} >> tmp/test.scm
+	if [ "${RNRS}" = "r6rs" ]; then cp -r retropikzel tmp/lib/; fi
+	if [ "${RNRS}" = "r6rs" ]; then snow-chibi install --impls=generic --install-source-dir=tmp/lib --install-library-dir=tmp/lib --always-yes foreign.c; fi
+	if [ "${RNRS}" = "r6rs" ]; then cd tmp && akku install akku-r7rs chez-srfi; fi
+	if [ "${RNRS}" = "r7rs" ]; then snow-chibi install --impls=${SCHEME} --always-yes --skip-tests?=1 srfi.64; fi
+	if [ "${RNRS}" = "r7rs" ]; then snow-chibi install --impls=${SCHEME} --always-yes --skip-tests?=1 foreign.c; fi
+	if [ "${RNRS}" = "r7rs" ]; then snow-chibi install --impls=${SCHEME} --always-yes ${PKG}; fi
+	if [ "${RNRS}" = "r6rs" ]; then cd tmp && COMPILE_R7RS=${SCHEME} compile-scheme -o test test.sps; fi
+	if [ "${RNRS}" = "r7rs" ]; then cd tmp && CSC_OPTIONS="-L -lcurl -L -lSDL2 -L -lSDL2_image" COMPILE_R7RS=${SCHEME} compile-scheme -o test test.scm; fi
+	cd tmp && ./test
+
+run-test-docker:
+	docker build --build-arg IMAGE=${DOCKERIMG} --build-arg SCHEME=${SCHEME} --tag=foreign-c-library-test-${SCHEME} -f Dockerfile.test .
+	docker run -v "${PWD}/logs:/workdir/logs" -w /workdir -t foreign-c-library-test-${SCHEME} sh -c "make SCHEME=${SCHEME} LIBRARY=${LIBRARY} RNRS=${RNRS} run-test-system"
+
 test-r7rs:
 	echo "(import (scheme base) (scheme write) (scheme file) (scheme process-context) (foreign c) (retropikzel ${LIBRARY}) (srfi 64))" > test-r7rs.scm
 	cat retropikzel/${LIBRARY}/test.scm >> test-r7rs.scm
diff --git a/retropikzel/requests/README.md b/retropikzel/requests/README.md
index 9acda97..323641d 100644
--- a/retropikzel/requests/README.md
+++ b/retropikzel/requests/README.md
@@ -1,7 +1,4 @@
-# requests
-
-Scheme library to make https requests. Built with
-[foreign c](https://sr.ht/~retropikzel/foreign-c/) and libcurl.
+Scheme library to make https requests. Built with (foreign c) and libcurl.
 
 [Repository](https://git.sr.ht/~retropikzel/foreign-c-requests)
 
@@ -9,15 +6,11 @@ Scheme library to make https requests. Built with
 
 [Jenkins](https://jenkins.scheme.org/job/foreign_c/job/foreign-c-requests/)
 
-
-
 ## Caveats
 
 - Not yet working on Mosh
 - No cookie reading support yet
 
-
-
 ## Dependencies
 
 Depends on libcurl, on Debian/Ubuntu:
diff --git a/retropikzel/spite.scm b/retropikzel/spite.scm
index 6b2bcec..2b82368 100644
--- a/retropikzel/spite.scm
+++ b/retropikzel/spite.scm
@@ -3,7 +3,7 @@
 (define exit? #f)
 (define scale-x 1.0)
 (define scale-y 1.0)
-(define events (list))
+(define events '())
 (define current-bitmap-font #f)
 (define current-line-size 1)
 (define draw-color-r 0)
@@ -51,39 +51,29 @@
 (define event* (make-c-bytevector 4000))
 (define draw-rect* (make-c-bytevector (* (c-type-size 'int) 4)))
 (define draw-slice-rect* (make-c-bytevector (* (c-type-size 'int) 4)))
-(define fill-triangle-vertex-size 128) ;(+ (* (c-type-size 'int) 6) (* (c-type-size 'float) 2))
+(define fill-triangle-vertex-size (+ (* (c-type-size 'int) 6) (* (c-type-size 'float) 2)))
 (define fill-triangle-vertex1* (make-c-bytevector fill-triangle-vertex-size 0))
 (define fill-triangle-vertex2* (make-c-bytevector fill-triangle-vertex-size 0))
 (define fill-triangle-vertex3* (make-c-bytevector fill-triangle-vertex-size 0))
 (define fill-triangle-vertexes* (make-c-bytevector (* fill-triangle-vertex-size 3 0)))
-(c-bytevector-set! fill-triangle-vertexes*
-                   'pointer
-                   (* fill-triangle-vertex-size 0)
-                   fill-triangle-vertex1*)
-(c-bytevector-set! fill-triangle-vertexes*
-                   'pointer
-                   (* fill-triangle-vertex-size 1)
-                   fill-triangle-vertex2*)
-(c-bytevector-set! fill-triangle-vertexes*
-                   'pointer
-                   (* fill-triangle-vertex-size 2)
-                   fill-triangle-vertex3*)
-
-(define update-procedure #f)
-(define draw-procedure #f)
+(c-bytevector-set!
+  fill-triangle-vertexes* 'pointer (* fill-triangle-vertex-size 0) fill-triangle-vertex1*)
+(c-bytevector-set!
+  fill-triangle-vertexes* 'pointer (* fill-triangle-vertex-size 1) fill-triangle-vertex2*)
+(c-bytevector-set!
+  fill-triangle-vertexes* 'pointer (* fill-triangle-vertex-size 2) fill-triangle-vertex3*)
 
 (define main-loop-start-time 0)
 (define delta-time 0)
-(define main-loop
-  (lambda ()
-    (set! main-loop-start-time (current-jiffy))
-    (sdl2-events-get)
-    (update-procedure delta-time (poll-events!))
-    (render-clear)
-    (draw-procedure)
-    (render-present)
-    (set! delta-time (/ (- (current-jiffy) main-loop-start-time) (jiffies-per-second)))
-    (unless exit? (main-loop))))
+(define (main-loop update-procedure draw-procedure)
+  (set! main-loop-start-time (current-jiffy))
+  (sdl2-events-get)
+  (update-procedure delta-time (poll-events!))
+  (render-clear)
+  (draw-procedure)
+  (render-present)
+  (set! delta-time (/ (- (current-jiffy) main-loop-start-time) (jiffies-per-second)))
+  (unless exit? (main-loop update-procedure draw-procedure)))
 
 (define sdl2-event->spite-event
   (lambda (event)
@@ -304,13 +294,11 @@
             (cons 'y (c-bytevector-ref y 'float 0))))))
 
 (define spite-start
-  (lambda (new-update-procedure new-draw-procedure)
-    (set! update-procedure new-update-procedure)
-    (set! draw-procedure new-draw-procedure)
+  (lambda (update-procedure draw-procedure)
     (cond
       ((not started?)
        (set! started? #t)
-       (main-loop)))))
+       (main-loop update-procedure draw-procedure)))))
 
 (define spite-init
   (lambda (title width height)