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diff --git a/.gitmodules b/.gitmodules
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+++ b/.gitmodules
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+[submodule "gnulib"]
+	path = gnulib
+	url = https://git.savannah.gnu.org/git/gnulib.git
diff --git a/AUTHORS b/AUTHORS
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index 0000000..4c99cf4
--- /dev/null
+++ b/AUTHORS
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+#+title: Demanding Interoperability to Strengthen the Free/Libre Web: Introducing DISFLUID
+#+title: List of authors
+#+language: en
+#+author: Vivien Kraus
+#+email: vivien@planete-kraus.eu
+
+List of authors:
+
+- Vivien Kraus [[mailto:vivien@planete-kraus.eu]]
+
+# Local Variables:
+# mode: org
+# End:
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..be3f7b2
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
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+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/ChangeLog
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..39baafa
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,89 @@
+SUBDIRS = lib libprog . po tests
+
+bin_PROGRAMS = disfluid
+
+lib_LTLIBRARIES = libdisfluid.la
+
+include_HEADERS = include/disfluid.h
+
+AM_VALAFLAGS = --pkg gtk4 \
+  --gresources $(srcdir)/src/disfluid.gresource.xml --gresourcesdir $(srcdir)
+ACLOCAL_AMFLAGS = -I m4 -I m4prog
+EXTRA_DIST = m4/gnulib-cache.m4 m4prog/gnulib-cache.m4 \
+  src/disfluid.gresource.xml \
+  src/about.ui \
+  src/disfluid.ui \
+  src/unit_tests_report.ui
+
+disfluid_SOURCES = src/main.vala \
+  src/main-relocate.h \
+  src/disfluid.gresource.c
+
+disfluid_CPPFLAGS = \
+  -I libprog -I $(srcdir)/libprog \
+  -I include -I $(srcdir)/include \
+  -DLOCALEDIR=\"$(localedir)\" \
+  -DINSTALLDIR=\"$(bindir)\" \
+  -DGETTEXT_PACKAGE=\"$(PACKAGE)\"
+
+disfluid_LDADD = \
+  libprog/libgnu.la \
+  libdisfluid.la \
+  $(LIBTHREAD) \
+  $(LTLIBINTL) \
+  $(SETLOCALE_LIB) \
+  $(SETLOCALE_NULL_LIB) \
+  @INTL_MACOSX_LIBS@
+
+libdisfluid_la_SOURCES = \
+  src/disfluid-init.h \
+  src/disfluid-tests.h \
+  src/disfluid-version.h \
+  src/libdisfluid.c
+
+libdisfluid_la_CPPFLAGS = \
+  -I lib -I $(srcdir)/lib \
+  -DBUILDING_LIBDISFLUID \
+  -I include -I $(srcdir)/include \
+  -DLOCALEDIR=\"$(localedir)\" \
+  -DINSTALLDIR=\"$(bindir)\"
+
+libdisfluid_la_CFLAGS = $(CFLAG_VISIBILITY)
+libdisfluid_la_LIBADD = \
+  lib/libgnu.la
+libdisfluid_la_LDFLAGS = \
+  $(LIBTHREAD) \
+  $(LTLIBINTL) \
+  $(SETLOCALE_LIB) \
+  $(SETLOCALE_NULL_LIB) \
+  @INTL_MACOSX_LIBS@
+
+SUFFIXES = .gresource.xml .gresource.c
+
+.gresource.xml.gresource.c:
+	$(AM_V_GEN) (cd $(srcdir) && $(GLIB_COMPILE_RESOURCES) --generate-source --target=$@-t $(srcdir)/$< && (echo "#include <config.h>" ; cat $@-t) > $@-fixed && rm -f $@-t && mv $@-fixed $(srcdir)/$@)
+
+src/disfluid.gresource.c: src/disfluid.ui src/about.ui src/unit_tests_report.ui
+
+TESTS = run-unit-tests
+check_PROGRAMS = run-unit-tests
+
+run_unit_tests_SOURCES = src/run-unit-tests.c
+run_unit_tests_CPPFLAGS = \
+  -I libprog -I $(srcdir)/libprog \
+  -I include -I $(srcdir)/include \
+  -DLOCALEDIR=\"$(localedir)\" \
+  -DINSTALLDIR=\"$(bindir)\" \
+  -DGETTEXT_PACKAGE=\"$(PACKAGE)\"
+
+run_unit_tests_LDADD = \
+  libprog/libgnu.la \
+  libdisfluid.la \
+  $(LIBTHREAD) \
+  $(LTLIBINTL) \
+  $(SETLOCALE_LIB) \
+  $(SETLOCALE_NULL_LIB) \
+  @INTL_MACOSX_LIBS@
+
+AM_TESTS_ENVIRONMENT = \
+  export LD_LIBRARY_PATH=.libs$(PATH_SEPARATOR)$$LD_LIBRARY_PATH ;
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..e844f1c
--- /dev/null
+++ b/NEWS
@@ -0,0 +1,10 @@
+#+title: What’s new in disfluid
+
+* Noteworthy changes in release ?.? (????-??-??) [?]
+
+#+language: en
+#+author: Vivien Kraus
+#+email: vivien@planete-kraus.eu
+# Local Variables:
+# mode: org
+# End:
diff --git a/README b/README
new file mode 100644
index 0000000..cd76558
--- /dev/null
+++ b/README
@@ -0,0 +1,8 @@
+#+title: Demanding Interoperability to Strengthen the Free/Libre Web: Introducing DISFLUID
+#+language: en
+#+author: Vivien Kraus
+#+email: vivien@planete-kraus.eu
+
+# Local Variables:
+# mode: org
+# End:
diff --git a/bootstrap-bootstrap b/bootstrap-bootstrap
new file mode 100755
index 0000000..b878b3c
--- /dev/null
+++ b/bootstrap-bootstrap
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+(cp -r gnulib/top/. . || cp -r "$GNULIB_SRCDIR/top/." . ) && ./bootstrap
diff --git a/bootstrap.conf b/bootstrap.conf
new file mode 100644
index 0000000..cce34ab
--- /dev/null
+++ b/bootstrap.conf
@@ -0,0 +1,61 @@
+# Bootstrap configuration.
+
+# Copyright (C) 2006-2022 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+# gnulib modules used by this package.
+gnulib_modules="
+gettext-h valgrind-tests git-version-gen
+gitlog-to-changelog vc-list-files
+lib-msvc-compat lib-symbol-visibility
+relocatable-lib-lgpl locale setlocale localeconv
+useless-if-before-free do-release-commit-and-tag
+announce-gen stdbool
+"
+
+COPYRIGHT_HOLDER='Vivien Kraus'
+MSGID_BUGS_ADDRESS='vivien@planete-kraus.eu'
+
+# Additional xgettext options to use.  Use "\\\newline" to break lines.
+XGETTEXT_OPTIONS='\\\
+ --flag=_:1:pass-c-format\\\
+ --flag=N_:1:pass-c-format\\\
+ --flag=P_:2:pass-c-format\\\
+ --flag=NP_:2:pass-c-format\\\
+ --flag=error:3:c-format --flag=error_at_line:5:c-format\\\
+ --keyword=_ --keyword=N_ --keyword=P_:1c,2 --keyword=NP_:1c,2 \\\
+ --from-code=utf-8'
+
+gnulib_name=libgnu
+
+gnulib_tool_option_extras='--makefile-name=Makefile.gnulib'
+
+checkout_only_file=guix.scm
+
+po_download_command_format="git archive --format=tar translations | tar -x -C %s && echo %s"
+
+bootstrap_post_import_hook ()
+{
+  "${GNULIB_SRCDIR}"/gnulib-tool --import \
+                                 --lib=libgnu \
+                                 --source-base=libprog \
+                                 --m4-base=m4prog \
+                                 --doc-base=doc \
+                                 --aux-dir=build-aux \
+                                 --libtool \
+                                 --macro-prefix=glprog \
+                                 relocatable-prog gettext-h locale setlocale stdbool
+}
diff --git a/cfg.mk b/cfg.mk
new file mode 100644
index 0000000..92a5623
--- /dev/null
+++ b/cfg.mk
@@ -0,0 +1,15 @@
+old_NEWS_hash = d41d8cd98f00b204e9800998ecf8427e
+_makefile_at_at_check_exceptions = ' && !/INTL_MACOSX_LIBS/'
+
+generated_files = $(srcdir)/lib/*.[ch] src/main.c
+_gl_translatable_string_re ?= \b(N?_|gettext) *\([^)"]*("|$$)|translatable="yes"
+
+.PHONY: push-updated-translations
+
+push-updated-translations:
+	@rm -rf translations-updated
+	git clone $(srcdir) translations-updated
+	(cd translations-updated && git checkout translations)
+	cp $(srcdir)/po/*.po translations-updated
+	(cd translations-updated && git add *.po && git commit -m"Update translations" && git push)
+	@rm -rf translations-updated
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..f38698b
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,71 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.69])
+AC_INIT([disfluid], m4_esyscmd([sh build-aux/git-version-gen .tarball-version]), [vivien@planete-kraus.eu])
+
+AC_SUBST(LTV_CURRENT, [0])
+AC_SUBST(LTV_REVISION, [0])
+AC_SUBST(LTV_AGE, [0])
+
+AC_SUBST(DLL_VERSION, $(expr ${LTV_CURRENT} - ${LTV_AGE}))
+
+AC_CONFIG_SRCDIR([include/disfluid.h])
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_MACRO_DIR([m4])
+
+# Checks for programs.
+AC_PROG_CC
+gl_EARLY
+glprog_EARLY
+AM_INIT_AUTOMAKE([gnu -Wall -Werror subdir-objects])
+AM_PROG_AR
+LT_INIT([win32-dll])
+gl_INIT
+glprog_INIT
+AM_PROG_VALAC
+AM_MISSING_PROG([GLIB_COMPILE_RESOURCES], [glib-compile-resources])
+
+# Checks for libraries.
+AM_GNU_GETTEXT([external])
+AM_GNU_GETTEXT_VERSION([0.19])
+PKG_CHECK_MODULES([LIBCHECK], [check], [
+  CPPFLAGS="$CPPFLAGS $LIBCHECK_CFLAGS"
+  CFLAGS="$CFLAGS $LIBCHECK_CFLAGS"
+  LIBS="$LIBS $LIBCHECK_LIBS"
+], [AC_MSG_WARN([pkg-config does not know the "check" module])])
+PKG_CHECK_MODULES([GTK], [gtk4], [
+  CPPFLAGS="$CPPFLAGS $GTK_CFLAGS"
+  CFLAGS="$CFLAGS $GTK_CFLAGS"
+  LIBS="$LIBS $GTK_LIBS"
+], [AC_MSG_WARN([pkg-config does not know the "gtk" module])])
+
+# Checks for header files.
+AC_CHECK_HEADERS([check.h gtk/gtk.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_INLINE
+AC_C_RESTRICT
+AC_TYPE_SIZE_T
+AC_TYPE_UINT32_T
+gl_VISIBILITY
+
+# Checks for library functions.
+AC_SEARCH_LIBS([srunner_create], [check])
+AC_SEARCH_LIBS([gtk_application_new], [gtk-4])
+
+i_am_windows=no
+case "$host_os" in
+  mingw* | cygwin*)
+    i_am_windows=yes;;
+esac
+
+AM_CONDITIONAL([SHLIBS_IN_BINDIR], [test "x$i_am_windows" = "xyes"])
+
+AC_CONFIG_FILES([
+  Makefile
+  lib/Makefile libprog/Makefile
+  po/Makefile.in
+  tests/Makefile])
+AC_OUTPUT
diff --git a/gnulib b/gnulib
new file mode 160000
+Subproject fd35991c84efd535bdb5adcddd7b9a49abdc41e
diff --git a/guix.scm b/guix.scm
new file mode 100644
index 0000000..249f88d
--- /dev/null
+++ b/guix.scm
@@ -0,0 +1,211 @@
+(define-module (guix)
+  #:use-module (gnu packages autotools)
+  #:use-module (gnu packages base)
+  #:use-module (gnu packages bash)
+  #:use-module (gnu packages build-tools)
+  #:use-module (gnu packages check)
+  #:use-module (gnu packages code)
+  #:use-module (gnu packages compression)
+  #:use-module (gnu packages gettext)
+  #:use-module (gnu packages gnome)
+  #:use-module (gnu packages gtk)
+  #:use-module (gnu packages perl)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages tex)
+  #:use-module (gnu packages texinfo)
+  #:use-module (gnu packages valgrind)
+  #:use-module (gnu packages version-control)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build utils)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix gexp)
+  #:use-module (guix git-download)
+  #:use-module (guix git)
+  #:use-module (guix modules)
+  #:use-module (guix packages)
+  #:use-module (guix utils)
+  #:use-module (guix store)
+  #:use-module (guix monads)
+  #:use-module (guix derivations)
+  #:use-module (guix download)
+  #:use-module (ice-9 popen)
+  #:use-module (ice-9 rdelim)
+  #:use-module (srfi srfi-19))
+
+(define git-exec
+  (run-with-store
+   (open-connection)
+   (mlet %store-monad ((git (package->derivation git)))
+         (mlet %store-monad ((built
+                              (built-derivations
+                               (list git))))
+               (return (string-append (derivation->output-path git)
+                                      "/bin/git"))))))
+
+(define disfluid:package-version
+  (with-directory-excursion
+      (dirname (current-filename))
+    (let ((port (open-pipe* OPEN_READ git-exec "describe" "--tags")))
+      (let ((version (read-line port)))
+        (when (eof-object? version)
+          (set! version "0.0.0"))
+        (close-port port)
+	version))))
+
+(define disfluid:commit-date
+  (with-directory-excursion
+      (dirname (current-filename))
+    (let ((port (open-pipe* OPEN_READ git-exec "log" "-1" "--format=%ci")))
+      (let ((date (read-line port)))
+        (close-port port)
+        (string->date date "~Y-~m-~d ~H:~M:~S ~z")))))
+
+(define disfluid:local-dir
+  (dirname (current-filename)))
+
+(define disfluid:package-source
+  (git-checkout
+   (url (string-append "file://" disfluid:local-dir))))
+
+(define disfluid:translations
+  (git-checkout
+   (url (string-append "file://" (dirname (current-filename))))
+   (branch "translations")))
+
+(define disfluid:raw-source
+  (computed-file "disfluid-raw-source"
+    (with-imported-modules
+        (source-module-closure '((guix build utils)))
+      #~(begin
+          (use-modules (guix build utils))
+          (mkdir-p #$output)
+          (with-directory-excursion #$output
+            (invoke #$(file-append git "/bin/git") "init")
+            (invoke #$(file-append git "/bin/git") "branch" "-m" "main")
+            (invoke #$(file-append git "/bin/git") "config"
+                    "user.email" "vivien@planete-kraus.eu")
+            (invoke #$(file-append git "/bin/git") "config"
+                    "user.name" "Vivien Kraus")
+            (copy-recursively #$(file-append disfluid:package-source "/.") "."
+                              #:follow-symlinks? #t)
+            (invoke #$(file-append git "/bin/git") "add" ".")
+            (invoke #$(file-append git "/bin/git") "commit"
+                    "-m" #$(format #f "Set up disfluid source code for ~a" disfluid:package-version))
+            (invoke #$(file-append git "/bin/git") "checkout" "-b" "translations")
+            (copy-recursively #$(file-append disfluid:translations "/.") "."
+                              #:follow-symlinks? #t)
+            (invoke #$(file-append git "/bin/git") "add" ".")
+            (false-if-exception
+             (invoke #$(file-append git "/bin/git") "commit"
+                     "-m" #$(format #f "Set up disfluid translations for ~a"
+                                    disfluid:package-version)))
+            (invoke #$(file-append git "/bin/git") "checkout" "main")
+            (invoke #$(file-append git "/bin/git") "tag" "-a"
+                    "-m" #$(format #f "Version ~a" disfluid:package-version)
+                    #$(format #f "v~a" disfluid:package-version)))))))
+
+(define-public disfluid-boot
+  (package
+    (name "disfluid-boot")
+    (version disfluid:package-version)
+    (source disfluid:raw-source)
+    (build-system gnu-build-system)
+    (arguments
+     (list
+      #:phases
+      #~(modify-phases
+            %standard-phases
+          (add-before 'bootstrap 'bootstrap-bootstrap
+            (lambda _
+              (invoke "sh" "bootstrap-bootstrap")))
+          (add-after 'bootstrap 'fix-/bin/sh-in-po
+            (lambda _
+	      (substitute*
+	          "po/Makefile.in.in"
+	        (("SHELL = /bin/sh")
+	         (format #f "SHELL = ~a" (which "sh"))))))
+          (add-after 'check 'syntax-check
+            (lambda _
+              (invoke "make" "syntax-check")))
+          (replace 'install
+            (lambda _
+              (invoke "git" "checkout" "--" "bootstrap-bootstrap")
+              (patch-shebang "configure")
+              (invoke "make" "-j8" "distcheck"
+                      (format #f "DISTCHECK_CONFIGURE_FLAGS=SHELL=~a" (which "sh")))
+              (invoke "tar" "xf" #$(format #f "disfluid-~a.tar.gz" disfluid:package-version))
+              (with-directory-excursion
+                  #$(format #f "disfluid-~a" disfluid:package-version)
+                  (substitute* "po/Makefile.in.in"
+                    (("SHELL = /gnu/store/.*/bin/sh")
+                     "SHELL = /bin/sh"))
+                  (substitute* "configure"
+                    (("#!/gnu/store/.*/bin/sh")
+                     "#!/bin/sh"))
+                  (substitute* "configure"
+                    (("/gnu/store/.*/bin/file")
+                     "/bin/file"))
+                  (with-directory-excursion "build-aux"
+                    (substitute* '("config.rpath" "git-version-gen" "gitlog-to-changelog"
+                                   "install-sh" "do-release-commit-and-tag"
+                                   "useless-if-before-free" "test-driver" "depcomp"
+                                   "announce-gen" "ltmain.sh" "config.sub" "libtool-reloc"
+                                   "missing" "config.libpath" "reloc-ldflags" "ar-lib"
+                                   "config.guess" "vc-list-files" "install-reloc")
+                      (("#!/gnu/store/.*/bin/sh")
+                       "#!/bin/sh"))))
+              (invoke "sh" "-c" "grep '/gnu/store/' -R disfluid-* && exit 1 ; true")
+              (mkdir-p #$output)
+              (invoke "tar"
+                      #$(format #f "--mtime=~a" (date->string disfluid:commit-date "~4"))
+                      "--sort=name"
+                      "--owner=0" "--group=0" "--numeric-owner"
+                      "--pax-option=exthdr.name=%d/PaxHeaders/%f,delete=atime,delete=ctime"
+                      "-cvzf" (string-append #$output "/complete-source.tar.gz")
+                      #$(format #f "disfluid-~a" disfluid:package-version)))))))
+    (native-inputs
+     (list autoconf autoconf-archive automake libtool gnu-gettext
+	   git valgrind (list glibc "debug")
+	   tar gzip global pkg-config vala
+	   texinfo (texlive-updmap.cfg (list texlive))
+           perl gnulib gtk check))
+    (inputs
+     (list gtk check gnu-gettext))
+    (home-page "https://labo.planete-kraus.eu/disfluid.git")
+    (synopsis "Demanding Interoperability to Strengthen the Free/Libre Web: Introducing Disfluid")
+    (description "This provides tools for web interoperability.")
+    (license license:agpl3+)))
+
+(package
+  (inherit disfluid-boot)
+  (name "disfluid")
+  (source #f)
+  (outputs (list "out" "complete-corresponding-source.tar.gz"))
+  (arguments
+   (list
+    #:phases
+    #~(modify-phases %standard-phases
+        (replace 'unpack
+          (lambda _
+            (invoke "tar" "xf" #+(file-append disfluid-boot "/complete-source.tar.gz"))
+            (chdir #$(format #f "disfluid-~a" disfluid:package-version))))
+        (replace 'install-license-files
+          (lambda _
+            ;; Do not try to install COPYING in the
+            ;; complete-corresponding-source.tar.gz output
+            (let ((dir (format #f "~a/~a"
+                               #$output
+                               #$(format #f "share/doc/disfluid-~a"
+                                         disfluid:package-version))))
+              (mkdir-p dir)
+              (copy-file "COPYING" (string-append dir "/COPYING")))))
+        (add-after 'install 'install-complete-corresponding-source
+          (lambda _
+            (mkdir-p (string-append #$output "/share/disfluid"))
+            (copy-file #+(file-append disfluid-boot "/complete-source.tar.gz")
+                       #$output:complete-corresponding-source.tar.gz))))))
+  (native-inputs
+   (list valgrind (list glibc "debug") pkg-config
+         texinfo (texlive-updmap.cfg (list texlive)) tar gzip))
+  (inputs
+   (list gnu-gettext gtk check)))
diff --git a/include/disfluid.h b/include/disfluid.h
new file mode 100644
index 0000000..4b0f49e
--- /dev/null
+++ b/include/disfluid.h
@@ -0,0 +1,38 @@
+#ifndef H_DISFLUID_INCLUDED
+# define H_DISFLUID_INCLUDED
+
+# include <stddef.h>
+
+# if defined _WIN32 && !defined __CYGWIN__
+#  define LIBDISFLUID_DLL_MADNESS 1
+# else
+#  define LIBDISFLUID_DLL_MADNESS 0
+# endif
+
+# if BUILDING_LIBDISFLUID && HAVE_VISIBILITY
+#  define LIBDISFLUID_DLL_EXPORTED __attribute__((__visibility__("default")))
+# elif BUILDING_LIBDISFLUID && LIBDISFLUID_DLL_MADNESS
+#  define LIBDISFLUID_DLL_EXPORTED __declspec(dllexport)
+# elif LIBDISFLUID_DLL_MADNESS
+#  define LIBDISFLUID_DLL_EXPORTED __declspec(dllimport)
+# else
+#  define LIBDISFLUID_DLL_EXPORTED
+# endif
+
+# define LIBDISFLUID_API \
+  LIBDISFLUID_DLL_EXPORTED
+
+# ifdef __cplusplus
+extern "C"
+{
+# endif				/* __cplusplus */
+
+  LIBDISFLUID_API const char *disfluid_version (void);
+
+  LIBDISFLUID_API int disfluid_run_tests (void);
+
+# ifdef __cplusplus
+}
+# endif				/* __cplusplus */
+
+#endif				/* not H_DISFLUID_INCLUDED */
diff --git a/lib/Makefile.am b/lib/Makefile.am
new file mode 100644
index 0000000..c8e822e
--- /dev/null
+++ b/lib/Makefile.am
@@ -0,0 +1,26 @@
+AUTOMAKE_OPTIONS =
+SUBDIRS =
+noinst_HEADERS =
+noinst_LIBRARIES =
+noinst_LTLIBRARIES =
+pkgdata_DATA =
+EXTRA_DIST =
+BUILT_SOURCES =
+SUFFIXES =
+MOSTLYCLEANFILES =
+MOSTLYCLEANDIRS =
+CLEANFILES =
+DISTCLEANFILES =
+MAINTAINERCLEANFILES =
+AM_CPPFLAGS =
+AM_CFLAGS =
+
+AM_CPPFLAGS += -DIN_LIBRARY -DENABLE_COSTLY_RELOCATABLE
+
+if SHLIBS_IN_BINDIR
+AM_CPPFLAGS += -DINSTALLDIR=\"$(bindir)\"
+else
+AM_CPPFLAGS += -DINSTALLDIR=\"$(libdir)\"
+endif
+
+include Makefile.gnulib
diff --git a/po/POTFILES.in b/po/POTFILES.in
new file mode 100644
index 0000000..d422297
--- /dev/null
+++ b/po/POTFILES.in
@@ -0,0 +1,5 @@
+# List of source files which contain translatable strings.
+src/about.ui
+src/disfluid.ui
+src/main.c
+src/unit_tests_report.ui
diff --git a/src/about.ui b/src/about.ui
new file mode 100644
index 0000000..e12946b
--- /dev/null
+++ b/src/about.ui
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.40.0 -->
+<interface>
+  <object class="GtkAboutDialog" id="dialog">
+    <property name="can-focus">False</property>
+    <property name="program-name">Disfluid</property>
+    <property name="copyright" translatable="yes">Copyright © 2023 Vivien Kraus &lt;vivien@planete-kraus.eu&gt;</property>
+    <property name="comments" translatable="yes">Demanding Interoperability to Strengthen the Free/Libre Web: Introducing Disfluid</property>
+    <property name="website">https://labo.planete-kraus.eu/disfluid.git</property>
+    <property name="website-label" translatable="yes">Source code repository</property>
+    <property name="logo-icon-name">face-uncertain-symbolic</property>
+    <property name="license-type">agpl-3-0</property>
+  </object>
+</interface>
diff --git a/src/disfluid-cache-request.h b/src/disfluid-cache-request.h
new file mode 100644
index 0000000..8d6310c
--- /dev/null
+++ b/src/disfluid-cache-request.h
@@ -0,0 +1,122 @@
+#ifndef DISFLUID_CACHE_REQUEST_INCLUDED
+# define DISFLUID_CACHE_REQUEST_INCLUDED
+
+struct disfluid_cache_request;
+
+static inline int cache_request_init (struct disfluid_cache_request *request);
+
+static inline
+  void cache_request_clear (struct disfluid_cache_request *request);
+
+static inline
+  int cache_request_prepare (struct disfluid_cache_request *request,
+			     const char *method, const char *host,
+			     const char *path, const char *version);
+
+static inline
+  const char *cache_request_method (const struct disfluid_cache_request
+				    *request);
+
+static inline
+  const char *cache_request_path (const struct disfluid_cache_request
+				  *request);
+
+static inline
+  const char *cache_request_host (const struct disfluid_cache_request
+				  *request);
+
+static inline
+  const char *cache_request_version (const struct disfluid_cache_request
+				     *request);
+
+struct disfluid_cache_request
+{
+  char *method;
+  char *host;
+  char *path;
+  char *version;
+};
+
+static inline int
+cache_request_init (struct disfluid_cache_request *request)
+{
+  request->method = NULL;
+  request->host = NULL;
+  request->path = NULL;
+  request->version = NULL;
+  return 0;
+}
+
+static inline void
+cache_request_clear (struct disfluid_cache_request *request)
+{
+  free (request->method);
+  free (request->host);
+  free (request->path);
+  free (request->version);
+  request->method = NULL;
+  request->host = NULL;
+  request->path = NULL;
+  request->version = NULL;
+}
+
+static inline int
+cache_request_prepare (struct disfluid_cache_request *request,
+		       const char *method, const char *host, const char *path,
+		       const char *version)
+{
+  char *my_method = malloc (strlen (method) + 1);
+  char *my_host = malloc (strlen (host) + 1);
+  char *my_path = malloc (strlen (path) + 1);
+  char *my_version = malloc (strlen (version) + 1);
+  if (my_method && my_host && my_path && my_version)
+    {
+      strcpy (my_method, method);
+      strcpy (my_host, host);
+      strcpy (my_path, path);
+      strcpy (my_version, version);
+      free (request->method);
+      free (request->host);
+      free (request->path);
+      free (request->version);
+      request->method = my_method;
+      request->host = my_host;
+      request->path = my_path;
+      request->version = my_version;
+      return 0;
+    }
+  else
+    {
+      free (my_method);
+      free (my_host);
+      free (my_path);
+      free (my_version);
+      return 1;
+    }
+}
+
+static inline const char *
+cache_request_method (const struct disfluid_cache_request *request)
+{
+  return request->method;
+}
+
+static inline const char *
+cache_request_path (const struct disfluid_cache_request *request)
+{
+  return request->path;
+}
+
+static inline const char *
+cache_request_host (const struct disfluid_cache_request *request)
+{
+  return request->host;
+}
+
+static inline const char *
+cache_request_version (const struct disfluid_cache_request *request)
+{
+  return request->version;
+}
+
+#endif /* DISFLUID_CACHE_REQUEST_INCLUDED */
diff --git a/src/disfluid-header-iterator.h b/src/disfluid-header-iterator.h
new file mode 100644
index 0000000..db3ff75
--- /dev/null
+++ b/src/disfluid-header-iterator.h
@@ -0,0 +1,85 @@
+#ifndef DISFLUID_HEADER_ITERATOR_INCLUDED
+# define DISFLUID_HEADER_ITERATOR_INCLUDED
+
+struct disfluid_header_iterator;
+
+static inline
+  int header_iterator_init_request (struct disfluid_header_iterator *iterator,
+				    const struct disfluid_cache_request
+				    *request);
+
+static inline
+  void header_iterator_clear (struct disfluid_header_iterator *iterator);
+
+static inline
+  const char *header_iterator_get_name (const struct disfluid_header_iterator
+					*iterator);
+
+static inline
+  const char *header_iterator_get_value (const struct disfluid_header_iterator
+					 *iterator);
+
+static inline
+  bool header_iterator_next (struct disfluid_header_iterator *iterator);
+
+# include "disfluid-cache-request.h"
+
+struct disfluid_header_iterator
+{
+  const struct disfluid_cache_request *request;
+  size_t i;
+};
+
+static inline int
+header_iterator_init (struct disfluid_header_iterator *iterator,
+		      const struct disfluid_cache_request *request)
+{
+  iterator->request = request;
+  iterator->i = 0;
+}
+
+static inline void
+header_iterator_clear (struct disfluid_header_iterator *iterator)
+{
+  iterator->request = NULL;
+}
+
+/* Before iterating over the other headers, the request produces 1
+   header: Host. */
+
+static inline const char *
+header_iterator_get_name (const struct disfluid_header_iterator *iterator)
+{
+  switch (iterator->i)
+    {
+    case 0:
+      return "Host";
+    default:
+      return NULL;
+    }
+}
+
+static inline const char *
+header_iterator_get_value (const struct disfluid_header_iterator *iterator)
+{
+  switch (iterator->i)
+    {
+    case 0:
+      return iterator->request->host;
+    default:
+      return NULL;
+    }
+}
+
+static inline bool
+header_iterator_next (struct disfluid_header_iterator *iterator)
+{
+  if (iterator->i < 1)
+    {
+      iterator->i += 1;
+      return true;
+    }
+  return false;
+}
+
+#endif /* DISFLUID_HEADER_ITERATOR_INCLUDED */
diff --git a/src/disfluid-init.h b/src/disfluid-init.h
new file mode 100644
index 0000000..48c256c
--- /dev/null
+++ b/src/disfluid-init.h
@@ -0,0 +1,22 @@
+#ifndef DISFLUID_INIT_INCLUDED
+# define DISFLUID_INIT_INCLUDED
+
+static inline void ensure_init (void);
+
+# include <locale.h>
+# include "gettext.h"
+# include "relocatable.h"
+# include "disfluid-version.h"
+
+static inline void
+ensure_init (void)
+{
+  static volatile int is_initialized = 0;
+  if (!is_initialized)
+    {
+      bindtextdomain (PACKAGE, relocate (LOCALEDIR));
+      is_initialized = 1;
+    }
+}
+
+#endif /* DISFLUID_INIT_INCLUDED */
diff --git a/src/disfluid-tests.h b/src/disfluid-tests.h
new file mode 100644
index 0000000..4e8ff5a
--- /dev/null
+++ b/src/disfluid-tests.h
@@ -0,0 +1,19 @@
+#ifndef DISFLUID_TESTS_INCLUDED
+# define DISFLUID_TESTS_INCLUDED
+
+static inline int run_tests (void);
+
+# include "disfluid-init.h"
+
+static inline int
+run_tests (void)
+{
+  ensure_init ();
+  if (STRNEQ (version (), VERSION))
+    {
+      return 1;
+    }
+  return 0;
+}
+
+#endif /* DISFLUID_TESTS_INCLUDED */
diff --git a/src/disfluid-version.h b/src/disfluid-version.h
new file mode 100644
index 0000000..371f82f
--- /dev/null
+++ b/src/disfluid-version.h
@@ -0,0 +1,13 @@
+#ifndef DISFLUID_VERSION_INCLUDED
+# define DISFLUID_VERSION_INCLUDED
+
+static inline const char *version (void);
+
+static inline const char *
+version (void)
+{
+  static const char *package_version = VERSION;
+  return package_version;
+}
+
+#endif /* DISFLUID_VERSION_INCLUDED */
diff --git a/src/disfluid.gresource.xml b/src/disfluid.gresource.xml
new file mode 100644
index 0000000..8410b7d
--- /dev/null
+++ b/src/disfluid.gresource.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<gresources>
+  <gresource prefix="/eu/planete_kraus/Disfluid">
+    <file>src/disfluid.ui</file>
+    <file>src/about.ui</file>
+    <file>src/unit_tests_report.ui</file>
+  </gresource>
+</gresources>
diff --git a/src/disfluid.ui b/src/disfluid.ui
new file mode 100644
index 0000000..1a516c8
--- /dev/null
+++ b/src/disfluid.ui
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.40.0 -->
+<interface>
+  <template class="DisfluidWindow" parent="GtkApplicationWindow">
+    <property name="can-focus">False</property>
+    <property name="titlebar">
+      <object class="GtkHeaderBar">
+        <property name="visible">True</property>
+        <property name="can-focus">False</property>
+        <property name="title-widget">
+          <object class="GtkLabel">
+            <property name="label" translatable="yes" context="gui-title" comments="Title of the main window.">Disfluid</property>
+            <property name="single-line-mode">True</property>
+            <property name="ellipsize">end</property>
+          </object>
+        </property>
+        <child type="end">
+          <object class="GtkMenuButton" id="window_menu">
+            <property name="visible">True</property>
+            <property name="can-focus">True</property>
+            <property name="focus-on-click">False</property>
+            <property name="receives-default">True</property>
+            <property name="icon-name">open-menu</property>
+          </object>
+        </child>
+      </object>
+    </property>
+    <child>
+      <object class="GtkLabel">
+        <property name="label" translatable="yes" context="gui-hello">Hello, world!</property>
+      </object>
+    </child>
+  </template>
+</interface>
diff --git a/src/libdisfluid.c b/src/libdisfluid.c
new file mode 100644
index 0000000..11a7e87
--- /dev/null
+++ b/src/libdisfluid.c
@@ -0,0 +1,21 @@
+#include <config.h>
+
+#include <disfluid.h>
+
+#define STREQ(a, b) (strcmp ((a), (b)) == 0)
+#define STRNEQ(a, b) (! (STREQ (a, b)))
+
+#include "disfluid-version.h"
+#include "disfluid-tests.h"
+
+const char *
+disfluid_version (void)
+{
+  return version ();
+}
+
+int
+disfluid_run_tests (void)
+{
+  return run_tests ();
+}
diff --git a/src/main-relocate.h b/src/main-relocate.h
new file mode 100644
index 0000000..d57e339
--- /dev/null
+++ b/src/main-relocate.h
@@ -0,0 +1,10 @@
+#include <config.h>
+#include "relocatable.h"
+
+/* relocate is a function-like macro. This greatly confuses vala. */
+
+const char *
+_disfluid_relocate (const char *arg)
+{
+  return relocate (arg);
+}
diff --git a/src/main.vala b/src/main.vala
new file mode 100644
index 0000000..cd24e95
--- /dev/null
+++ b/src/main.vala
@@ -0,0 +1,134 @@
+[CCode (cheader_filename = "config.h")]
+extern const string INCLUDE_CONFIG_H;
+
+extern const string PACKAGE;
+extern const string VERSION;
+extern const string LOCALEDIR;
+
+[CCode (cheader_filename = "locale.h")]
+extern const string INCLUDE_LOCALE_H;
+
+[CCode (cheader_filename = "gettext.h")]
+extern const string INCLUDE_GETTEXT_H;
+
+[CCode (cheader_filename = "progname.h")]
+extern const string INCLUDE_PROGNAME_H;
+
+extern void set_program_name(string arg0);
+
+[CCode (cheader_filename = "src/main-relocate.h")]
+extern unowned string _disfluid_relocate(string arg);
+
+[CCode (cheader_filename = "disfluid.h")]
+extern int disfluid_run_tests ();
+
+[GtkTemplate (ui = "/eu/planete_kraus/Disfluid/src/disfluid.ui")]
+public class DisfluidWindow: Gtk.ApplicationWindow
+{
+	[GtkChild]
+	private unowned Gtk.MenuButton window_menu;
+
+	public DisfluidWindow (Gtk.Application app)
+	{
+		this.application = app;
+		var menu_model = new GLib.Menu ();
+		menu_model.append(_ ("About disfluid"), "app.about");
+		menu_model.append(_ ("Run disfluid unit tests"), "app.run-unit-tests");
+		window_menu.menu_model = menu_model;
+	}
+}
+
+async int do_run_tests_in_bg () throws GLib.ThreadError
+{
+	GLib.SourceFunc callback = do_run_tests_in_bg.callback;
+	int[] output = new int[1];
+	ThreadFunc<bool> run = () => {
+		output[0] = disfluid_run_tests ();
+		Idle.add ((owned) callback);
+		return true;
+	};
+	new Thread<bool> ("unit-tests-thread", run);
+	yield;
+	return output[0];
+}
+
+[GtkTemplate (ui = "/eu/planete_kraus/Disfluid/src/unit_tests_report.ui")]
+public class DisfluidUnitTestsReport: Gtk.ApplicationWindow
+{
+	[GtkChild]
+	private unowned Gtk.Stack stack;
+
+	[GtkChild]
+	private unowned Gtk.Box page_success;
+
+	[GtkChild]
+	private unowned Gtk.Box page_failure;
+
+	public DisfluidUnitTestsReport (Gtk.Application app)
+	{
+		this.application = app;
+		do_run_tests_in_bg.begin ((obj, res) => {
+				try
+				{
+					int results = do_run_tests_in_bg.end (res);
+					if (results == 0)
+					{
+						this.stack.visible_child = this.page_success;
+					}
+					else
+					{
+						this.stack.visible_child = this.page_failure;
+					}
+				}
+				catch (ThreadError e)
+				{
+					this.stack.visible_child = this.page_failure;
+				}
+			});
+	}
+}
+
+public class DisfluidApplication: Gtk.Application
+{
+	public DisfluidApplication ()
+	{
+		Object (application_id: "eu.planete_kraus.Disfluid", flags: 0);
+
+		GLib.SimpleAction show_about_dialog =
+			new GLib.SimpleAction ("about", null);
+		show_about_dialog.activate.connect (() => {
+				this.hold ();
+				var builder = new Gtk.Builder.from_resource ("/eu/planete_kraus/Disfluid/src/about.ui");
+				var dialog = (Gtk.AboutDialog) builder.get_object ("dialog");
+				dialog.application = this;
+				dialog.version = VERSION;
+				dialog.present ();
+				this.release ();
+			});
+		this.add_action (show_about_dialog);
+		GLib.SimpleAction run_unit_tests =
+			new GLib.SimpleAction ("run-unit-tests", null);
+		run_unit_tests.activate.connect (() => {
+				this.hold ();
+				var report = new DisfluidUnitTestsReport (this);
+				report.present ();
+				this.release ();
+			});
+		this.add_action (run_unit_tests);
+		this.activate.connect (() => {
+				var main_window = new DisfluidWindow (this);
+				main_window.present ();
+			});
+	}
+}
+
+int
+main (string[] argv)
+{
+	set_program_name (argv[0]);
+	Intl.setlocale (LocaleCategory.ALL, "");
+	Intl.bindtextdomain (PACKAGE, _disfluid_relocate (LOCALEDIR));
+	Intl.textdomain (PACKAGE);
+	var app = new DisfluidApplication ();
+	return app.run (argv);
+}
diff --git a/src/run-unit-tests.c b/src/run-unit-tests.c
new file mode 100644
index 0000000..a1fa54d
--- /dev/null
+++ b/src/run-unit-tests.c
@@ -0,0 +1,21 @@
+#include <config.h>
+#include <disfluid.h>
+
+#include <locale.h>
+#include "gettext.h"
+#include "progname.h"
+#include "relocatable.h"
+
+int
+main (int argc, char *argv[])
+{
+  set_program_name (argv[0]);
+  setlocale (LC_ALL, "");
+  bindtextdomain (PACKAGE, relocate (LOCALEDIR));
+  textdomain (PACKAGE);
+  if (disfluid_run_tests () != 0)
+    {
+      return 1;
+    }
+  return 0;
+}
diff --git a/src/unit_tests_report.ui b/src/unit_tests_report.ui
new file mode 100644
index 0000000..bd95793
--- /dev/null
+++ b/src/unit_tests_report.ui
@@ -0,0 +1,119 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.40.0 -->
+<interface>
+  <template class="DisfluidUnitTestsReport" parent="GtkApplicationWindow">
+    <property name="can-focus">False</property>
+    <child>
+      <object class="GtkBox">
+        <property name="can-focus">False</property>
+        <property name="orientation">vertical</property>
+        <property name="spacing">2</property>
+        <child>
+          <object class="GtkStack" id="stack">
+            <property name="visible">True</property>
+            <property name="can-focus">False</property>
+            <property name="transition-type">slide-left</property>
+            <child>
+              <object class="GtkBox" id="page_wait">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <property name="orientation">vertical</property>
+                <property name="spacing">10</property>
+                <child>
+                  <object class="GtkLabel">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <property name="label" translatable="yes">Please wait while disfluid is running the unit tests…</property>
+                    <property name="wrap">True</property>
+                  </object>
+                </child>
+                <child>
+                  <object class="GtkSpinner">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <property name="spinning">True</property>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child>
+              <object class="GtkBox" id="page_failure">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <property name="orientation">vertical</property>
+                <child>
+                  <object class="GtkBox">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <child>
+                      <object class="GtkImage">
+                        <property name="visible">True</property>
+                        <property name="can-focus">False</property>
+                        <property name="icon-name">dialog-error-symbolic</property>
+                        <property name="icon_size">large</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkBox">
+                        <property name="visible">True</property>
+                        <property name="can-focus">False</property>
+                        <property name="orientation">vertical</property>
+                        <property name="spacing">4</property>
+                        <child>
+                          <object class="GtkLabel">
+                            <property name="visible">True</property>
+                            <property name="can-focus">False</property>
+                            <property name="label" translatable="yes">The disfluid unit tests failed. Please report the failure to:</property>
+                            <property name="wrap">True</property>
+                          </object>
+                        </child>
+                        <child>
+                          <object class="GtkLinkButton">
+                            <property name="label" translatable="yes">vivien@planete-kraus.eu</property>
+                            <property name="visible">True</property>
+                            <property name="can-focus">True</property>
+                            <property name="receives-default">True</property>
+                            <property name="uri">mailto:vivien@planete-kraus.eu</property>
+                          </object>
+                        </child>
+                      </object>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child>
+              <object class="GtkBox" id="page_success">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <property name="orientation">vertical</property>
+                <child>
+                  <object class="GtkBox">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <child>
+                      <object class="GtkImage">
+                        <property name="visible">True</property>
+                        <property name="can-focus">False</property>
+                        <property name="icon-name">security-high-symbolic</property>
+                        <property name="icon_size">large</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkLabel">
+                        <property name="visible">True</property>
+                        <property name="can-focus">False</property>
+                        <property name="label" translatable="yes">The unit tests passed.</property>
+                        <property name="wrap">True</property>
+                      </object>
+                    </child>
+                  </object>
+                </child>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>
diff --git a/tests/Makefile.am b/tests/Makefile.am
new file mode 100644
index 0000000..e389584
--- /dev/null
+++ b/tests/Makefile.am
@@ -0,0 +1 @@
+include Makefile.gnulib