diff --git a/gnu/local.mk b/gnu/local.mk
index ad7b0a1480..c812881809 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1757,8 +1757,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/ripperx-missing-file.patch		\
   %D%/packages/patches/rpcbind-CVE-2017-8779.patch		\
   %D%/packages/patches/rtags-separate-rct.patch			\
-  %D%/packages/patches/racket-enable-scheme-backport.patch	\
-  %D%/packages/patches/racket-gui-tethered-launcher-backport.patch	\
   %D%/packages/patches/racket-minimal-sh-via-rktio.patch	\
   %D%/packages/patches/remake-impure-dirs.patch			\
   %D%/packages/patches/restic-0.9.6-fix-tests-for-go1.15.patch	\
diff --git a/gnu/packages/chez.scm b/gnu/packages/chez.scm
index d47225dbe5..a7f75a731a 100644
--- a/gnu/packages/chez.scm
+++ b/gnu/packages/chez.scm
@@ -4,7 +4,7 @@
 ;;; Copyright © 2017, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2019 Brett Gilio <brettg@gnu.org>
 ;;; Copyright © 2020 Brendan Tildesley <mail@brendan.scot>
-;;; Copyright © 2021 Philip McGrath <philip@philipmcgrath.com>
+;;; Copyright © 2021, 2022 Philip McGrath <philip@philipmcgrath.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -361,7 +361,7 @@ (define-public chez-scheme-for-racket
   (package
     (inherit chez-scheme)
     (name "chez-scheme-for-racket")
-    (version "9.5.7.3")
+    (version "9.5.7.6")
     ;; The version should match `(scheme-fork-version-number)`.
     ;; See racket/src/ChezScheme/s/cmacros.ss c. line 360.
     ;; It will always be different than the upstream version!
diff --git a/gnu/packages/patches/racket-enable-scheme-backport.patch b/gnu/packages/patches/racket-enable-scheme-backport.patch
deleted file mode 100644
index 3a5a4a3d82..0000000000
--- a/gnu/packages/patches/racket-enable-scheme-backport.patch
+++ /dev/null
@@ -1,465 +0,0 @@
-From 8d7687842f099e3e7e60d3a83fed58b2c6a92863 Mon Sep 17 00:00:00 2001
-From: Matthew Flatt <mflatt@racket-lang.org>
-Date: Sun, 6 Feb 2022 10:36:09 -0700
-Subject: [PATCH 1/2] Chez Scheme: adapt bootfile build for supplied `Scheme=`
-
-(cherry picked from commit fca1e02349664060e10278ca2ce6577a949bebf5)
-
-(Fixed conflicts by dropping pbchunks and pbarch changes.)
----
- racket/src/ChezScheme/configure  | 15 ++++++++++++++-
- racket/src/ChezScheme/s/Mf-base  |  4 ++--
- racket/src/ChezScheme/s/Mf-cross |  4 +++-
- 3 files changed, 19 insertions(+), 4 deletions(-)
-
-diff --git a/racket/src/ChezScheme/configure b/racket/src/ChezScheme/configure
-index 4515ffc105..0098829091 100755
---- a/racket/src/ChezScheme/configure
-+++ b/racket/src/ChezScheme/configure
-@@ -45,6 +45,7 @@ threads=yes
- nothreads=no
- temproot=""
- help=no
-+forceworkarea=no
- gzipmanpages=yes
- installowner=""
- installgroup=""
-@@ -205,6 +206,9 @@ while [ $# != 0 ] ; do
-     --pb)
-       pb=yes
-       ;;
-+    --force)
-+      forceworkarea=yes
-+      ;;
-     --installprefix=*)
-       installprefix=`echo $1 | sed -e 's/^--installprefix=//'`
-       ;;
-@@ -439,6 +443,7 @@ if [ "$help" = "yes" ]; then
-   echo "  --toolprefix=<prefix>             prefix tool (compiler, linker, ...) names"
-   echo "  --[no]gzip-man-pages              compress manual pages ($gzipmanpages)"
-   echo "  --workarea=<pathname>             build directory ($w)"
-+  echo "  --force                           configure even without boot files"
-   echo "  CC=<C compiler>                   C compiler"
-   echo "  CPPFLAGS=<C preprocessor flags>   C preprocessor flags"
-   echo "  CFLAGS=<C compiler flags>         C compiler flags"
-@@ -721,8 +726,16 @@ case "${flagsmuni}" in
-         ;;
- esac
- 
-+if [ "$w" = "$m" ] ; then
-+    configuringin=""
-+else
-+    configuringin=" in $w"
-+fi
-+
- if [ -f boot/$m/scheme.boot -o -f "$srcdir"/boot/$m/scheme.boot ] ; then
--  echo "Configuring for $m"
-+    echo "Configuring for $m$configuringin"
-+elif [ "$forceworkarea" = yes ] ; then
-+    echo "Configuring for $m$configuringin despite missing boot files"
- else
-   if [ "$m" = "" ] ; then
-       maybem="<machine type>"
-diff --git a/racket/src/ChezScheme/s/Mf-base b/racket/src/ChezScheme/s/Mf-base
-index cc6178c973..1f4a967998 100644
---- a/racket/src/ChezScheme/s/Mf-base
-+++ b/racket/src/ChezScheme/s/Mf-base
-@@ -94,7 +94,7 @@ endif
- # that Scheme and SCHEMEHEAPDIRS are set by Mf-cross to point to the host Scheme
- # implementation
- Scheme = ../bin/$m/scheme${ExeSuffix}
--export SCHEMEHEAPDIRS=../boot/%m
-+export SCHEMEHEAPDIRS=../boot/$m
- export CHEZSCHEMELIBDIRS=.
- 
- # Define the libdirs separator character
-@@ -691,4 +691,4 @@ reset-one:
- 
- .PHONY: run
- run:
--	env SCHEMEHEAPDIRS=../boot/$m/ ../bin/$m/scheme $(ARGS)
-+	env SCHEMEHEAPDIRS=${SCHEMEHEAPDIRS} ${Scheme} $(ARGS)
-diff --git a/racket/src/ChezScheme/s/Mf-cross b/racket/src/ChezScheme/s/Mf-cross
-index d796cbb459..397af59a28 100644
---- a/racket/src/ChezScheme/s/Mf-cross
-+++ b/racket/src/ChezScheme/s/Mf-cross
-@@ -43,5 +43,7 @@ x$(xm).$(m):
- 	$(MAKE) -f Mf-cross m=$(m) xm=$(xm) i=f o=3 d=0 xpatch
- 	mv xpatch x$(xm).$(m)
- 
-+ifneq ($(SCHEMEHEAPDIRS),:)
- # Ensure that cross-compiling "nanopass.so" is rebuilt if the host compiler changed
--nanopass.so: ${SCHEME} ${SCHEMEHEAPDIRS}/petite.boot ${SCHEMEHEAPDIRS}/scheme.boot
-+nanopass.so: ${Scheme} ${SCHEMEHEAPDIRS}/petite.boot ${SCHEMEHEAPDIRS}/scheme.boot
-+endif
--- 
-2.32.0
-
-
-From 26c8e2c1d9b02ad85acef8bda40d92154cf0b699 Mon Sep 17 00:00:00 2001
-From: Matthew Flatt <mflatt@racket-lang.org>
-Date: Sun, 6 Feb 2022 11:03:30 -0700
-Subject: [PATCH 2/2] configure: make `--enable-scheme` work with an executable
-
-When the same Chez Scheme version as used by Racket is already
-available, then `--enable-scheme=...` can supply an executable. For
-cross builds, `--enable-scheme=...` can still supply a build
-directory, instead, as before.
-
-(cherry picked from commit 4f0e76855ce7e86107de495292a553469daf0b3f)
----
- racket/src/ChezScheme/makefiles/Makefile.in |  3 ++
- racket/src/README.txt                       | 30 +++++++++++---
- racket/src/configure                        |  8 +++-
- racket/src/cs/README.txt                    |  6 ++-
- racket/src/cs/c/Makefile.in                 | 44 ++++++++++++++++-----
- racket/src/cs/c/configure                   | 24 +++++++++--
- racket/src/cs/c/configure.ac                | 21 ++++++++--
- 7 files changed, 112 insertions(+), 24 deletions(-)
-
-diff --git a/racket/src/ChezScheme/makefiles/Makefile.in b/racket/src/ChezScheme/makefiles/Makefile.in
-index c396efc851..3998ef9ccd 100644
---- a/racket/src/ChezScheme/makefiles/Makefile.in
-+++ b/racket/src/ChezScheme/makefiles/Makefile.in
-@@ -59,6 +59,9 @@ reset:
- %.boot:
- 	(cd $(workarea) && $(MAKE) $*.boot)
- 
-+auto.boot:
-+	(cd $(workarea) && $(MAKE) $(defaultm).boot)
-+
- # <machine>.bootquick to build boot files for <machine>
- # with o=3 d=0 for the cross compiler, and only after
- # building the kernel for the configured machine
-diff --git a/racket/src/README.txt b/racket/src/README.txt
-index 98647aebce..d77310b4a4 100644
---- a/racket/src/README.txt
-+++ b/racket/src/README.txt
-@@ -354,6 +354,10 @@ variant of MinGW without "libdelayimp.a", get the implementation of
- ========================================================================
- 
- Cross-compilation requires at least two flags to `configure`:
-+`--host=OS` and either `--enable-racket=RACKET` or (for Racket CS)
-+`--enable-scheme-SCHEME`.
-+
-+More information:
- 
-  * `--host=OS`, where OS is something like `i386-gnu-linux` to
-    indicate the target platform.
-@@ -374,11 +378,27 @@ Cross-compilation requires at least two flags to `configure`:
-    run `configure` again (with no arguments) in a "local" subdirectory
-    to create a build for the current platform.
- 
--An additional flag is needed for building Racket CS, unless the flag
--`--enable-racket=auto` is used:
--
-- * `--enable-scheme=DIR`, where DIR is a path that has a "ChezScheme"
--   directory where Chez Scheme is built for the host system.
-+ * `--enable-scheme=SCHEME`, where SCHEME is a Chez Scheme executable
-+   executable that runs on the build platform; the executable must be
-+   the same version as used in Racket built for the target platform.
-+ 
-+   Supplying `--enable-scheme=DIR` is also supported in cross-build
-+   mode, where DIR is a path that has a "ChezScheme" directory where
-+   Chez Scheme is built for the host system.
-+
-+The `--enable-racket=RACKET` and `--enable-scheme=SCHEME` flags are
-+allowed for non-cross builds, too:
-+
-+ * For Racket CS, supplying either selects a Racket or Chez Scheme
-+   implementation used to create boot files to the build platform.
-+   Suppling Chez Scheme is a much more direct path, but when Racket is
-+   supplied, its version does not have to match the version being
-+   built.
-+
-+ * For Racket BC, `--enable-racket=RACKET` selects a Racket for
-+   prepare C sources to cooperate with garbage collection. Its version
-+   needs to be close to the one being built, and potentially exactly
-+   the same version.
- 
- Some less commonly needed `configure` flags are for Racket BC:
- 
-diff --git a/racket/src/configure b/racket/src/configure
-index c9f3ba4419..1b53ec7ce2 100755
---- a/racket/src/configure
-+++ b/racket/src/configure
-@@ -9,6 +9,7 @@ pb_dir="$dir/ChezScheme/boot/pb"
- use_cs=maybe
- use_bc=maybe
- supplied_racket=no
-+supplied_scheme=no
- enable_boothelp=
- 
- # We don't have to detect conflicts like `--enable-csdefault --enable-bcdefault`,
-@@ -34,6 +35,9 @@ for arg in $*; do
-         --enable-racket=*)
-             supplied_racket=yes
-             ;;
-+        --enable-scheme=*)
-+            supplied_scheme=yes
-+            ;;
-         --help | -h)
-             echo $0:
-             echo see --help-bc or --help-cs, since the Racket CS build and the
-@@ -70,8 +74,8 @@ elif test "$use_cs" = "maybe" ; then
- fi
- 
- if test "$use_cs" = "yes" ; then
--    if test $use_bc = no  -a $supplied_racket = no -a ! -d "$pb_dir" ; then
--        echo $0: must have $pb_dir or --enable-racket=... for --enable-csonly
-+    if test $use_bc = no  -a $supplied_racket = no  -a $supplied_scheme = no  -a ! -d "$pb_dir" ; then
-+        echo $0: must have $pb_dir, --enable-racket=... or --enable-scheme=... for --enable-csonly
-         exit 1
-     fi
- 
-diff --git a/racket/src/cs/README.txt b/racket/src/cs/README.txt
-index 2ece417b78..8e6fc57b74 100644
---- a/racket/src/cs/README.txt
-+++ b/racket/src/cs/README.txt
-@@ -39,6 +39,11 @@ build:
-    installed in the "../ChezScheme/boot/pb" directory as described by
-    "../ChezScheme/BUILDING".
- 
-+   Supplying `--enable-scheme=...` is also an option if you alerady
-+   have the same version of Chez Scheme built on the current platform.
-+   Another build will be created, anyway, but more quickly than
-+   without Chez Scheme.
-+
-  * Racket is needed to generate the files in the "schemified"
-    directory from the sources in sibling directories like "../io". The
-    Racket version must be practically the same as the current Racket
-@@ -48,7 +53,6 @@ build:
-    Unlike Chez Scheme boot files, the files generated in "schemified"
-    are human-readable and -editable Scheme code. That provides a way
-    out of bootstrapping black holes, even without BC.
--   
- 
- 
- ========================================================================
-diff --git a/racket/src/cs/c/Makefile.in b/racket/src/cs/c/Makefile.in
-index 54a644a1d9..d73993f0fc 100644
---- a/racket/src/cs/c/Makefile.in
-+++ b/racket/src/cs/c/Makefile.in
-@@ -12,7 +12,9 @@ CS_HOST_WORKAREA_PREFIX = @CS_HOST_WORKAREA_PREFIX@
- SCHEME_HOST_WORKAREA = $(CS_HOST_WORKAREA_PREFIX)$(SCHEME_WORKAREA)
- SCHEME_BIN = $(SCHEME_HOST_WORKAREA)/$(MACH)/bin/$(MACH)/scheme
- SCHEME_INC = $(SCHEME_HOST_WORKAREA)/$(MACH)/boot/$(MACH)
--SCHEME = $(SCHEME_BIN) -B $(SCHEME_INC)/petite.boot -B $(SCHEME_INC)/scheme.boot
-+SCHEME_built = $(SCHEME_BIN) -B $(SCHEME_INC)/petite.boot -B $(SCHEME_INC)/scheme.boot
-+SCHEME_existing = @MAKE_SCHEME_SCHEME@
-+SCHEME = $(SCHEME@USE_SCHEME_MODE@)
- 
- TARGET_MACH = @TARGET_MACH@
- SCHEME_TARGET_INC = $(SCHEME_WORKAREA)/$(TARGET_MACH)/boot/$(TARGET_MACH)
-@@ -88,7 +90,7 @@ mainsrcdir = @srcdir@/../..
- @INCLUDEDEP@ @srcdir@/../../version/version.mak
- 
- cs:
--	$(MAKE) scheme@T_CROSS_MODE@
-+	$(MAKE) scheme@MAKE_SCHEME_MODE@
- 	$(MAKE) racket-so
- 	cd rktio; $(MAKE)
- 	$(MAKE) racketcs
-@@ -121,9 +123,13 @@ racket-so:
- 
- RACKET_SO_ENV = @CONFIGURE_RACKET_SO_COMPILE@
- 
-+TARGET_MACH_built = $(TARGET_MACH)
-+TARGET_MACH_existing = xc-$(TARGET_MACH)
-+XPATCH_FILE = $(SCHEME_WORKAREA)/$(TARGET_MACH@USE_SCHEME_MODE@)/s/xpatch
-+
- CS_PROGS = SCHEME="$(SCHEME)"
- CS_OPTS = COMPRESS_COMP=@COMPRESS_COMP@ @ENABLE_OR_DISABLE_WPO@
--CS_OPTScross = $(CS_OPTS) CSO=$(MACH) CROSS_COMP="--xpatch $(SCHEME_WORKAREA)/$(TARGET_MACH)/s/xpatch"
-+CS_OPTScross = $(CS_OPTS) CSO=$(MACH) CROSS_COMP="--xpatch $(XPATCH_FILE)"
- PASS_COMPILE_DEPS = EXTRA_COMPILE_DEPS="$(SCHEME_INC)/petite.boot $(SCHEME_INC)/scheme.boot"
- 
- build-racket-so:
-@@ -163,6 +169,15 @@ pb-bootquick:
- 	cd $(SCHEME_WORKAREA) && $(MAKE) reset
- 	$(SHELL) $(srcdir)/ready_boot.sh $(MACH) $(SCHEME_WORKAREA)
- 
-+scheme-via-scheme:
-+	$(MAKE) $(SCHEME_WORKAREA)/boot/$(MACH)/scheme.boot
-+	$(MAKE) mach-make
-+
-+$(SCHEME_WORKAREA)/boot/$(MACH)/scheme.boot:
-+	mkdir -p $(SCHEME_WORKAREA)
-+	$(MAKE) config-scheme CONFIG_SCHEME_MODE="$(CONFIG_SCHEME_MODE) --force"
-+	cd $(SCHEME_WORKAREA) && $(MAKE) $(MACH).boot Scheme="$(SCHEME)" SCHEMEHEAPDIRS=: o=3 d=0 what=all
-+
- mach-make:
- 	$(MAKE) config-scheme
- 	cd $(SCHEME_WORKAREA) && $(MAKE)
-@@ -182,24 +197,33 @@ config-scheme:
- 
- scheme-cross:
- 	env MAKE_BOOT_FOR_CROSS=yes SCHEME_SRC="$(SCHEME_DIR)" SCHEME_WORKAREA=$(SCHEME_WORKAREA) MACH="$(TARGET_MACH)" $(BOOTSTRAP_RACKET) "$(SCHEME_DIR)"/rktboot/make-boot.rkt
-+	$(MAKE) finish-scheme-cross
-+
-+finish-scheme-cross:
- 	$(SHELL) $(srcdir)/reset_boot.sh $(TARGET_MACH) $(SCHEME_WORKAREA)
- 	cd $(SCHEME_WORKAREA) && "$(UP_SCHEME_DIR)"/configure @SCHEME_CROSS_CONFIG_ARGS@ $(SCHEME_CONFIG_VARS)
- 	cd $(SCHEME_WORKAREA)/$(TARGET_MACH)/c && $(CHOST_HACK@T_CROSS_MODE@) $(MAKE) o=o cross=t
--	$(MAKE) $(SCHEME_WORKAREA)/$(TARGET_MACH)/s/xpatch
-+	$(MAKE) $(XPATCH_FILE)
-+
-+scheme-cross-via-scheme:
-+	$(MAKE) $(SCHEME_WORKAREA)/boot/$(TARGET_MACH)/scheme.boot MACH=$(TARGET_MACH)
-+	$(MAKE) finish-scheme-cross
- 
- # Rebuild patch file and cross "petite.boot" and "scheme.boot" when older
--# than the build-host "scheme.boot" or when "make-boot.rkt" touchs dummy boot files
--XPATCH_DEPS = $(SCHEME_HOST_WORKAREA)/$(MACH)/boot/$(MACH)/scheme.boot \
--              $(SCHEME_WORKAREA)/boot/$(TARGET_MACH)/scheme.boot
-+# than the build-<host "scheme.boot" or when "make-boot.rkt" touchs dummy boot files
-+XPATCH_DEPS_built = $(SCHEME_HOST_WORKAREA)/$(MACH)/boot/$(MACH)/scheme.boot \
-+                    $(SCHEME_WORKAREA)/boot/$(TARGET_MACH)/scheme.boot
-+XPATCH_DEPS_existing = 
-+XPATCH_DEPS = $(XPATCH_DEPS@USE_SCHEME_MODE@)
- 
--$(SCHEME_WORKAREA)/$(TARGET_MACH)/s/xpatch: $(XPATCH_DEPS)
-+$(XPATCH_FILE): $(XPATCH_DEPS)
- 	$(MAKE) bounce TARGET=build-xpatch-using-host
- 
- build-xpatch-using-host:
- 	cd $(SCHEME_WORKAREA)/$(TARGET_MACH)/s && $(MAKE) -f Mf-cross m=$(MACH) xm=$(TARGET_MACH) Scheme="$(SCHEME_BIN)" SCHEMEHEAPDIRS="$(SCHEME_INC)"
- 
- XPATCH =
--XPATCHcross = --xpatch $(SCHEME_WORKAREA)/$(TARGET_MACH)/s/xpatch
-+XPATCHcross = --xpatch $(XPATCH_FILE)
- 
- racket.boot: racket.so
- 	$(SCHEME) --script $(srcdir)/convert-to-boot.ss @BOOT_COMPRESS_COMP@ $(XPATCH@CROSS_MODE@) racket.so racket.boot $(TARGET_MACH)
-@@ -410,7 +434,7 @@ install-cross:
- 	$(MAKE) compile-xpatch.$(TARGET_MACH)
- 	$(MAKE) library-xpatch.$(TARGET_MACH)
- 
--SCHEME_XPATCH = $(SCHEME_WORKAREA)/$(TARGET_MACH)/s/xpatch
-+SCHEME_XPATCH = $(XPATCH_FILE)
- 
- CROSS_SERVE_DEPS = $(srcdir)/mk-cross-serve.ss $(srcdir)/cross-serve.ss \
-                    $(srcdir)/../expander/env.ss $(srcdir)/../linklet/config.ss
-diff --git a/racket/src/cs/c/configure b/racket/src/cs/c/configure
-index 21695a431a..1eeef57753 100755
---- a/racket/src/cs/c/configure
-+++ b/racket/src/cs/c/configure
-@@ -654,6 +654,9 @@ MINGW
- NOT_OSX
- OSX
- SETUP_BOOT_MODE
-+USE_SCHEME_MODE
-+MAKE_SCHEME_SCHEME
-+MAKE_SCHEME_MODE
- TT_CROSS_MODE
- T_CROSS_MODE
- CROSS_MODE
-@@ -1448,7 +1451,7 @@ Optional Features:
-   --enable-docs           build docs on install (enabled by default)
-   --enable-usersetup      setup user-specific files on install
-   --enable-racket=<path>  use <path> as Racket for build; or "auto" to create
--  --enable-scheme=<path>  use <path> as host's build directory for cross
-+  --enable-scheme=<path>  use <path> as host build for cross
-   --enable-mach=<mach>    use Chez Scheme machine type <mach>
-   --enable-target=<mach>  cross-build for Chez Scheme machine type <mach>
-   --enable-portable       prefer portable to host-specific
-@@ -2867,7 +2870,7 @@ show_explicitly_enabled "${enable_xonx}" "Unix style"
- show_explicitly_enabled "${enable_libzo}" 'Compiled ".zo" files moved to lib'
- 
- show_explicitly_set "${enable_racket}" "Racket"
--show_explicitly_set "${enable_scheme}" "Chez Scheme build directory"
-+show_explicitly_set "${enable_scheme}" "Chez Scheme for build"
- show_explicitly_set "${enable_mach}" "machine type"
- show_explicitly_set "${enable_target}" "cross-build machine type"
- show_explicitly_enabled "${enable_portable}" "portable"
-@@ -4745,9 +4748,21 @@ esac
- 
- SCHEME_DIR=${srcdir}/../../ChezScheme
- MAKE_BUILD_SCHEME=checkout
-+USE_SCHEME_MODE="_built"
-+MAKE_SCHEME_MODE="${T_CROSS_MODE}"
- 
- if test "${enable_scheme}" != "" ; then
--  CS_HOST_WORKAREA_PREFIX="${enable_scheme}/"
-+   if test -d "${enable_scheme}" ; then
-+     # Directory exists, so use it as a build directory
-+     echo "Using supplied Scheme path as a build directory"
-+     CS_HOST_WORKAREA_PREFIX="${enable_scheme}/"
-+   else
-+     # Directory does not exist, so assume it's an executable
-+     echo "Using supplied Scheme path as an executable"
-+     MAKE_SCHEME_MODE="${T_CROSS_MODE}-via-scheme"
-+     MAKE_SCHEME_SCHEME="${enable_scheme}"
-+     USE_SCHEME_MODE="_existing"
-+   fi
- fi
- 
- if test "${enable_racket}" != "" ; then
-@@ -6012,6 +6027,9 @@ SCHEME_CROSS_CONFIG_ARGS="--machine=${TARGET_MACH} --disable-x11 ${cs_auto_flags
- 
- 
- 
-+
-+
-+
- 
- 
- 
-diff --git a/racket/src/cs/c/configure.ac b/racket/src/cs/c/configure.ac
-index 464ebe1760..aaee88156d 100644
---- a/racket/src/cs/c/configure.ac
-+++ b/racket/src/cs/c/configure.ac
-@@ -23,7 +23,7 @@ AC_ARG_ENABLE(compressmore, [  --enable-compressmore   compress compiled code ev
- AC_ARG_ENABLE(compressboot, [  --enable-compressboot   compress boot files])
- m4_include(../ac/path_arg.m4)
- AC_ARG_ENABLE(racket,     [  --enable-racket=<path>  use <path> as Racket for build; or "auto" to create])
--AC_ARG_ENABLE(scheme,     [  --enable-scheme=<path>  use <path> as host's build directory for cross])
-+AC_ARG_ENABLE(scheme,     [  --enable-scheme=<path>  use <path> as host build for cross])
- AC_ARG_ENABLE(mach,       [  --enable-mach=<mach>    use Chez Scheme machine type <mach>])
- AC_ARG_ENABLE(target,     [  --enable-target=<mach>  cross-build for Chez Scheme machine type <mach>])
- m4_include(../ac/portable_arg.m4)
-@@ -81,7 +81,7 @@ show_explicitly_disabled "${enable_compressboot}" "Compressed boot files"
- show_explicitly_enabled "${enable_xonx}" "Unix style"
- m4_include(../ac/path_show.m4)
- show_explicitly_set "${enable_racket}" "Racket"
--show_explicitly_set "${enable_scheme}" "Chez Scheme build directory"
-+show_explicitly_set "${enable_scheme}" "Chez Scheme for build"
- show_explicitly_set "${enable_mach}" "machine type"
- show_explicitly_set "${enable_target}" "cross-build machine type"
- m4_include(../ac/portable_show.m4)
-@@ -504,9 +504,21 @@ esac
- 
- SCHEME_DIR=${srcdir}/../../ChezScheme
- MAKE_BUILD_SCHEME=checkout
-+USE_SCHEME_MODE="_built"
-+MAKE_SCHEME_MODE="${T_CROSS_MODE}"
- 
- if test "${enable_scheme}" != "" ; then
--  CS_HOST_WORKAREA_PREFIX="${enable_scheme}/"
-+   if test -d "${enable_scheme}" ; then
-+     # Directory exists, so use it as a build directory
-+     echo "Using supplied Scheme path as a build directory"
-+     CS_HOST_WORKAREA_PREFIX="${enable_scheme}/"
-+   else
-+     # Directory does not exist, so assume it's an executable
-+     echo "Using supplied Scheme path as an executable"
-+     MAKE_SCHEME_MODE="${T_CROSS_MODE}-via-scheme"
-+     MAKE_SCHEME_SCHEME="${enable_scheme}"
-+     USE_SCHEME_MODE="_existing"
-+   fi     
- fi
- 
- if test "${enable_racket}" != "" ; then
-@@ -821,6 +833,9 @@ AC_SUBST(DIFF_MACH)
- AC_SUBST(CROSS_MODE)
- AC_SUBST(T_CROSS_MODE)
- AC_SUBST(TT_CROSS_MODE)
-+AC_SUBST(MAKE_SCHEME_MODE)
-+AC_SUBST(MAKE_SCHEME_SCHEME)
-+AC_SUBST(USE_SCHEME_MODE)
- AC_SUBST(SETUP_BOOT_MODE)
- AC_SUBST(OSX)
- AC_SUBST(NOT_OSX)
--- 
-2.32.0
-
diff --git a/gnu/packages/patches/racket-gui-tethered-launcher-backport.patch b/gnu/packages/patches/racket-gui-tethered-launcher-backport.patch
deleted file mode 100644
index 1e018eaa79..0000000000
--- a/gnu/packages/patches/racket-gui-tethered-launcher-backport.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-From aa792e707b1fbc5cc33691bfaee5828dc3fbebaa Mon Sep 17 00:00:00 2001
-From: Matthew Flatt <mflatt@racket-lang.org>
-Date: Mon, 31 Jan 2022 15:31:22 -0700
-Subject: [PATCH] fix creation of tethered launchers
-
-Related to racket/racket#4133
-
-(cherry picked from commit 563c68432f127729592f234ef30c31e92618b517)
----
- gui-lib/mred/installer.rkt | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/gui-lib/mred/installer.rkt b/gui-lib/mred/installer.rkt
-index b1691472..9ef06c53 100644
---- a/gui-lib/mred/installer.rkt
-+++ b/gui-lib/mred/installer.rkt
-@@ -72,4 +72,5 @@
-    (list "-A" (path->string (find-system-path 'addon-dir)))))
- 
- (define (config-flags)
--  (list "-G" (path->string (find-config-dir))))
-+  (list "-X" (path->string (find-collects-dir))
-+        "-G" (path->string (find-config-dir))))
--- 
-2.32.0
-
diff --git a/gnu/packages/racket.scm b/gnu/packages/racket.scm
index 471a11dd48..adf3ccfd74 100644
--- a/gnu/packages/racket.scm
+++ b/gnu/packages/racket.scm
@@ -195,7 +195,7 @@ (define* (racket-vm-for-system #:optional
       racket-vm-cs
       racket-vm-bc))
 
-(define %racket-version "8.4") ; Remember to update chez-scheme-for-racket!
+(define %racket-version "8.5") ; Remember to update chez-scheme-for-racket!
 (define %racket-commit
   (string-append "v" %racket-version))
 (define %racket-origin
@@ -205,11 +205,9 @@ (define %racket-origin
           (url "https://github.com/racket/racket")
           (commit %racket-commit)))
     (sha256
-     (base32 "1vpl66gdgc8rnldmn8rmb7ar9l057jqjvgpfn29k57i3c5skr8s6"))
+     (base32 "0f9zyhdvbh4xsndrqjzl85j5ziz0rmqi676g9s1lw3h3skq2636h"))
     (file-name (git-file-name "racket" %racket-version))
-    (patches (search-patches "racket-minimal-sh-via-rktio.patch"
-                             ;; Remove by Racket 8.5:
-                             "racket-enable-scheme-backport.patch"))
+    (patches (search-patches "racket-minimal-sh-via-rktio.patch"))
     (modules '((guix build utils)))
     (snippet
      #~(begin
@@ -248,8 +246,6 @@ (define (racket-vm-common-configure-flags)
       ,(string-append "CPPFLAGS=-DGUIX_RKTIO_PATCH_BIN_SH="
                       #$(file-append bash-minimal "/bin/sh"))
       "--disable-strip"
-      ;; XXX: origtree layout is required by some other packages down the
-      ;; bootstrap chain.  Remove these flags as soon as we can do without them.
       "--enable-origtree"
       ,(string-append "--prefix=" #$output "/opt/racket-vm")))
 
@@ -442,17 +438,18 @@ (define (racket-packages-origin name origin specs)
                                         #$name)))
                  specs)))))
 
-(define (simple-racket-origin repo hash specs)
+(define* (simple-racket-origin repo hash specs #:key (commit %racket-commit))
   "Like 'racket-packages-origin', but specialized for packages hosted at
 \"https://github.com/racket/REPO\" with sha256 checksum HASH.  REPO is also
-used to build the name of the resulting store item."
+used to build the name of the resulting store item.  If COMMIT is given, it is
+used instead of %RACKET-COMMIT."
   (racket-packages-origin
    repo
    (origin
      (method git-fetch)
      (uri (git-reference
            (url (format #f "https://github.com/racket/~a" repo))
-           (commit %racket-commit)))
+           (commit commit)))
      (sha256 hash)
      (file-name (git-file-name (string-append "racket-" repo)
                                %racket-version)))
@@ -589,7 +586,7 @@ (define-public racket
       racket-minimal ;; <-- TODO non-tethered layer
       (racket-vm-for-system)
       (simple-racket-origin
-       "2d" (base32 "1zzcz5qyjv7syi41vb8jkxjp1rqgj61zbsdrg0nlc4qy9qsafzgr")
+       "2d" (base32 "0fb5v6058ls08xw3zbmqyr2ym0psm119gl9ffgmhm9w8rs9i4dq7")
        '("2d" "2d-doc" "2d-lib"))
       (simple-racket-origin
        "algol60" (base32 "09kj6asypmc24n29w0izc9p0q8hpga2hpkchsypfwn5c8zpvihlx")
@@ -622,22 +619,22 @@ (define-public racket
        "data" (base32 "10iabgrk9alaggvksnyb0hdq7f1p30pq6pq2bcakvhzpxwiv1f55")
        '("data" "data-doc" "data-enumerate-lib" "data-lib"))
       (simple-racket-origin
-       "datalog" (base32 "0n5j5gnqh7g31mvgx19ggl18hirzbvq2r189lbngmnrmbc7b73fp")
+       "datalog" (base32 "0nf6cy4djpyhfvgpa6yn72apbz9s83gp0qg95pzjd0az4v6qwq1s")
        '(("datalog" ".")))
       (simple-racket-origin
        "db" (base32 "1n02ja0yj3mjjhmz0yv04yfhyvrsznbljn8bjviyfxnm4xf9rcc5")
        '("db" "db-doc" "db-lib"))
       (simple-racket-origin
-       "deinprogramm" (base32 "1is6fapgv6rxfjz47nh6qf3kh7y7sjdinakaxqffi46gf1al8prd")
+       "deinprogramm" (base32 "0g8flr1qg3bcyhdinqhs4w7dyisaqyailbxrjgd2a7zlqmdyicfr")
        '("deinprogramm" "deinprogramm-signature"))
       (simple-racket-origin
        "distributed-places" (base32 "1dajpkj9balqcpv6cdk9hwjz592h1vq8rrx5vncariiac4vbdpa0")
        '("distributed-places" "distributed-places-doc" "distributed-places-lib"))
       (simple-racket-origin
-       "draw" (base32 "1xgjfbh70hqw67z88iqqajg98d04qwbzn6im2wj47rs28jxlm9ly")
+       "draw" (base32 "1fpk85rs2crd63bxnmwj2pysisd62pxcqaip01si67dv1ri8ff92")
        '("draw" "draw-doc" "draw-lib"))
       (simple-racket-origin
-       "drracket" (base32 "0m3l4an3nq2ycd1h287s1az2v2zprjbzd8if2x7d5r71vaj4i00c")
+       "drracket" (base32 "0dipnz92c63zxys9z1kl5215rm7arc35g9r8bs8ivp96p75mljnz")
        '("drracket"
          "drracket-plugin-lib"
          "drracket-tool"
@@ -657,7 +654,7 @@ (define-public racket
        "errortrace" (base32 "14m7rhaxngj36070iw15am434hm438pfgmwjfsiqhsglz4pcxhip")
        '("errortrace" "errortrace-doc" "errortrace-lib"))
       (simple-racket-origin
-       "expeditor" (base32 "07djzxs6307l51mcsk3yr2g4g47ayxa3878g7sf5xhqdr4hd9vxf")
+       "expeditor" (base32 "0mjfwb4wzwsg5xj3k6cmik0va432n56rp5h7rxx1c2yy3prh1j7q")
        '("expeditor" "expeditor-doc" "expeditor-lib"))
       (simple-racket-origin
        "frtime" (base32 "0ydz2yn8vvv6z7brwlswcyx0f31a6y6d443i89rysfvd2xkhpfd5")
@@ -670,25 +667,14 @@ (define-public racket
       (simple-racket-origin
        "games" (base32 "0kpn3izlx1ccd0pj0dnvmnrhny51b85xy418a7psj70lz8j8415d")
        '(("games" ".")))
-      (racket-packages-origin
-       "gui" (origin
-               (method git-fetch)
-               (uri (git-reference
-                     (url "https://github.com/racket/gui")
-                     (commit %racket-commit)))
-               (sha256 (base32
-                        "1x33jgrx3r32k7hgwr591z3xqv1m2r5nc4km2fnxv0ak2xa0j3gj"))
-               (patches
-                ;; remove in Racket 8.5
-                ;; see https://github.com/racket/racket/issues/4133
-                (search-patches "racket-gui-tethered-launcher-backport.patch"))
-               (file-name (git-file-name "racket-gui" %racket-version)))
+      (simple-racket-origin
+       "gui" (base32 "0hqryw3md67j5z4d6bv5qx75w8z1vjxfixabf2xq9bj6k43yzzmi")
        '("gui" "gui-doc" "gui-lib" "tex-table"))
       (simple-racket-origin
        "gui-pkg-manager" (base32 "1ji9448d723nklqvycwdswj0ni28sabrncag14f9mx47did5myb5")
        '("gui-pkg-manager-lib"))
       (simple-racket-origin
-       "htdp" (base32 "0r4ykybcpr10y2db9rlza9pr0xh58nd7ac389mjcxp8g386hgihl")
+       "htdp" (base32 "199qchdq6db6m2n4j861hiy4nxd6hg1qva16lhhdbfj274qmcplg")
        '("htdp" "htdp-doc" "htdp-lib"))
       (simple-racket-origin
        "html" (base32 "18n1jnjgzfknc8nv8dppi85nb8q08gqdwkg6hfjk08x0p00anx2x")
@@ -756,7 +742,7 @@ (define-public racket
        "pconvert" (base32 "00czi0p399mmyrvxyrs5kniizpkqfxyz2ncxqi2jy79a7wk79pb1")
        '("pconvert-lib"))
       (simple-racket-origin
-       "pict" (base32 "0g1iwdr6qh1xb0crhj96830vjjnbds409xbpqn7j5sh0ksy6vr5x")
+       "pict" (base32 "0v7a3l77swsbh80mnb9rakdwgw7s66ji0mall7qcqfwyg1b4zmlv")
        '("pict" "pict-doc" "pict-lib"))
       (simple-racket-origin
        "pict-snip" (base32 "081nwiy4a0n4f7xws16hqbhf0j3kz5alizndi3nnyr3chm4kng6x")
@@ -771,7 +757,7 @@ (define-public racket
        "planet" (base32 "0r2yqrzrmdjjyr14k6hhlzc5kzrcx3583m1s02mhrcmpfw0s85w9")
        '("planet" "planet-doc" "planet-lib"))
       (simple-racket-origin
-       "plot" (base32 "07kq32si34ybcwz8idxxcrzssg8diyrp1nfgkcj0mmvr45321zm7")
+       "plot" (base32 "04871pspbm0q3bz5896sa3jw2rp9i6jf0b5aivrxfp56vxxd2ybb")
        '("plot" "plot-compat" "plot-doc" "plot-gui-lib" "plot-lib"))
       (simple-racket-origin
        "preprocessor" (base32 "1p5aid58ifnjy4xl0ysh85cq39k25661v975jrpk182z3k5621mg")
@@ -786,7 +772,7 @@ (define-public racket
                              (url "https://github.com/Metaxal/quickscript")
                              (commit %racket-commit)))
                        (sha256 (base32
-                                "100g3yqhbjdq06b6l6d72ywsw29awgy8crqg33wj7h12xq07nzcr"))
+                                "00sf5nw09aacd0l4a4cknnffvcs95p596im3blsdvfz5ck6jdwl8"))
                        (file-name (git-file-name "Metaxal-quickscript" %racket-version)))
        '(("quickscript" ".")))
       (simple-racket-origin
@@ -807,10 +793,10 @@ (define-public racket
                          (git-file-name "jeapostrophe-racket-cheat" %racket-version)))
        '(("racket-cheat" ".")))
       (simple-racket-origin
-       "racklog" (base32 "1rgrvwy3kr9b9w5cghsffiv3ly00yfvvzr5xaaw83g1w7yin0mnb")
+       "racklog" (base32 "0fbq0fpfb3l6h7h772dvkmlzlk2dnq5f8296xx1qxhhwypibqzr9")
        '(("racklog" ".")))
       (simple-racket-origin
-       "rackunit" (base32 "057z31rja6h3nabh5b2xgwfrzmlm6h1cv1qcgf3xfy4g2q5dqn5p")
+       "rackunit" (base32 "0vfwcddzrgrdv5awjka7m0jzqhqvfc5wlkih83a670y96496a83n")
        '("rackunit"
          "rackunit-doc"
          "rackunit-gui"
@@ -826,7 +812,7 @@ (define-public racket
        "realm" (base32 "0hxcgla08iack54j8v40fj51811chpy66ym2zq76zb52c7kzn0hi")
        '(("realm" ".")))
       (simple-racket-origin
-       "redex" (base32 "0vlgxbnbgrlihk1hh5zd6hsc4566ldi4q76f87z5vai54dxkwy2f")
+       "redex" (base32 "0a1fl5s80k3j3xh3lri8886ql443m7pmgv18y7whzlmsd7x8rdpr")
        '("redex"
          "redex-benchmark"
          "redex-doc"
@@ -841,7 +827,7 @@ (define-public racket
        "scheme-lib" (base32 "0pcf0y8rp4qyjhaz5ww5sr5diq0wpcdfrrnask7zapyklzx1jx8x")
        '(("scheme-lib" ".")))
       (simple-racket-origin
-       "scribble" (base32 "0rgvnsykrxkah6s5fw1vyp9lxsb4z9w6hgwk5j6wbwjp2gsfczbm")
+       "scribble" (base32 "0fbb7xgz95y90247hfc1a19v7ry8m6blvv4y8irdgzhjvik70zb3")
        '("scribble"
          "scribble-doc"
          "scribble-html-lib"
@@ -873,35 +859,24 @@ (define-public racket
        "snip" (base32 "01r9wc5xr3q3n4yyif6j0a37rgdzmpslxn05k13ksik73b3wj6hj")
        '("snip" "snip-lib"))
       (simple-racket-origin
-       "typed-racket" (base32 "1462kj9yswsxbnw71casylzlvhd7cxrml2v9j7rcsnn9hmrqx4vv")
+       "typed-racket" (base32 "05xlyjrx3m8xrrrw1xmfb1807qa5aqfl0zp9bdxwh2z7cfxaii09")
        '("source-syntax"
          "typed-racket"
          "typed-racket-compatibility"
          "typed-racket-doc"
          "typed-racket-lib"
          "typed-racket-more"))
-      (racket-packages-origin
-       "srfi" (origin
-                (method git-fetch)
-                (uri (git-reference
-                      (url "https://github.com/racket/srfi")
-                      ;; Includes an FSDG fix: return to %racket-commit in 8.5.
-                      ;; See <https://github.com/racket/srfi/pull/15>.
-                      (commit "7243029b135741ce08ae30f877e2f49a2a460b22")))
-                (sha256 (base32
-                         "0aqbcdv2dfc2xnk0h6zfi56p7bpwqji8s88qds3d03hhh9k28gvn"))
-                ;; Use the relevant version for srfi-doc and srfi-lib,
-                ;; since we're using a newer commit than the v8.4 tag.
-                (file-name (git-file-name "racket-srfi" "1.1")))
+      (simple-racket-origin
+       "srfi" (base32 "0aqbcdv2dfc2xnk0h6zfi56p7bpwqji8s88qds3d03hhh9k28gvn")
        '("srfi" "srfi-doc" "srfi-lib" "srfi-lite-lib"))
       (simple-racket-origin
-       "string-constants" (base32 "1qizjq4n0hzdgdcjjpr94464gsywpsk2g9mnvwzqr7dcqbrsfvn6")
+       "string-constants" (base32 "1rjs0gyw9hsiglwxnimz272v9xj1gwjxrnzh4qbsxkvdaphvi38m")
        '("string-constants" "string-constants-doc" "string-constants-lib"))
       (simple-racket-origin
        "swindle" (base32 "164gdsphjzdl2vv7zxz7dfk9jwax8njpmim6sidm8qz8a8589y67")
        '(("swindle" ".")))
       (simple-racket-origin
-       "syntax-color" (base32 "1vf2fc3qvx8a1igi7swsg8gaqhx786sa0vqxd18xhbsidfgb5ywp")
+       "syntax-color" (base32 "1xf3rl8687c1nar4kkgkvyncwi0gl696rif0iqhffg730fk457gi")
        '("syntax-color" "syntax-color-doc" "syntax-color-lib"))
       (simple-racket-origin
        "trace" (base32 "070ihla5j796hdarn5wxdwn4xj0xnkm50shgh49jy994mribvhia")
@@ -910,13 +885,13 @@ (define-public racket
        "unix-socket" (base32 "02dfwas5ynbpyz74w9kwb4wgb37y5wys7svrlmir8k0n9ph9vq0y")
        '("unix-socket" "unix-socket-doc" "unix-socket-lib"))
       (simple-racket-origin
-       "web-server" (base32 "1zgb6jl7zx6258ljs8f3lvryrq5n5zpd71dqzr698m92kw3x2pkn")
+       "web-server" (base32 "1g4x79ym3mgxv4f3z3z84j12355pf44pjlzlb7f0h6r0i7p0cbjd")
        '("web-server" "web-server-doc" "web-server-lib"))
       (simple-racket-origin
        "wxme" (base32 "1qp5gr9gqsakiq3alw6m4yyv5vw4i3hp4y4nhq8vl2nkjmirvn0b")
        '("wxme" "wxme-lib"))
       (simple-racket-origin
-       "xrepl" (base32 "12zjgsy5zqm3fck3ihg4a70wj56s2cnnjyb4jlfi5nnsfqyrnxg3")
+       "xrepl" (base32 "19svg0jfs656bld5ikqipz3a5szk5k02zq5fh43209qw527dnfbk")
        '("xrepl" "xrepl-doc" "xrepl-lib"))))
     (build-system gnu-build-system)
     (arguments
