diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2fac2003..6a6703e6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: debian:buster
+image: debian:bullseye
 
 stages:
   - build
@@ -11,7 +11,7 @@ stages:
 before_script:
   - apt-get -y update
   - apt-get -y install wget ca-certificates gnupg
-  - echo "deb http://ci.puri.sm/ scratch librem5" > /etc/apt/sources.list.d/ci.list
+  - echo "deb [trusted=yes] http://ci.puri.sm/ bullseyeci main" > /etc/apt/sources.list.d/ci.list
   - wget -O- https://ci.puri.sm/ci-repo.key | apt-key add -
   - apt-get -y update
 
@@ -27,7 +27,8 @@ build_docs:
       - ./doc/build.sh _build
 
 build_meson:
-  <<: *tags
+  tags:
+    - librem5
   stage: build
   artifacts:
     paths:
@@ -52,15 +53,48 @@ build_deb:
         - debuild -i -us -uc -b
         - cp ../*.deb .
 
-build_deb:arm64:
+build_deb:amber:
+    image: pureos/amber
     tags:
-        - librem5:arm64
-    allow_failure: true
+        - librem5
     stage: build
     artifacts:
       paths:
         - "*.deb"
     script:
+        - echo "deb http://ci.puri.sm/ scratch librem5" > /etc/apt/sources.list.d/ci.list
+        - apt-get -y update
+        - rm -f ../*.deb
+        - apt-get -y build-dep .
+        - apt-get -y install devscripts
+        - debuild -i -us -uc -b
+        - cp ../*.deb .
+
+build_deb:arm64:
+    tags:
+        - librem5:arm64
+    stage: build
+    artifacts:
+      paths:
+        - "*.deb"
+    script:
+        - rm -f ../*.deb
+        - apt-get -y build-dep .
+        - apt-get -y install devscripts
+        - debuild -i -us -uc -b
+        - cp ../*.deb .
+
+build_deb:arm64_buster:
+    image: "debian:buster"
+    tags:
+        - librem5:arm64
+    stage: build
+    artifacts:
+      paths:
+        - "*.deb"
+    script:
+        - echo "deb http://ci.puri.sm/ scratch librem5" > /etc/apt/sources.list.d/ci.list
+        - apt-get -y update
         - rm -f ../*.deb
         - apt-get -y build-dep .
         - apt-get -y install devscripts
@@ -77,7 +111,8 @@ test_lintian:
         - lintian *.deb
 
 test:
-  <<: *tags
+  tags:
+    - librem5
   stage: test
   needs:
     - build_meson
diff --git a/Cargo.deps b/Cargo.deps
new file mode 100644
index 00000000..6fe72260
--- /dev/null
+++ b/Cargo.deps
@@ -0,0 +1,22 @@
+# Dependencies which change based on build flags
+bitflags = "1.2.*"
+clap = { version = "2.33.*", default-features = false }
+regex = { version = "1.3.*", default-features = false, features = ["std", "unicode-case"] }
+
+[dependencies.cairo-rs]
+version = "0.7.*"
+
+[dependencies.gdk]
+version = "0.11.*"
+
+[dependencies.gio]
+version = "0.7.*"
+features = ["v2_44"]
+
+[dependencies.glib]
+version = "0.8.*"
+features = ["v2_44"]
+
+[dependencies.gtk]
+version = "0.7.*"
+features = ["v3_22"]
diff --git a/Cargo.deps.legacy b/Cargo.deps.legacy
new file mode 100644
index 00000000..bfbb50dc
--- /dev/null
+++ b/Cargo.deps.legacy
@@ -0,0 +1,22 @@
+# Dependencies which change based on build flags
+bitflags = "1.0.*"
+clap = { version = "2.32.*", default-features = false }
+regex = { version = "1.1.*", default-features = false, features = ['use_std'] }
+
+[dependencies.cairo-rs]
+version = "0.5.*"
+
+[dependencies.gdk]
+version = "0.9.*"
+
+[dependencies.gio]
+version = "0.5.*"
+features = ["v2_44"]
+
+[dependencies.glib]
+version = "0.6.*"
+features = ["v2_44"]
+
+[dependencies.gtk]
+version = "0.5.*"
+features = ["v3_22"]
diff --git a/Cargo.lock b/Cargo.lock
index 2229db68..65916991 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,52 +1,55 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
 [[package]]
-name = "aho-corasick"
-version = "0.7.10"
+name = "atk"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atk-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "atk-sys"
-version = "0.7.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "bitflags"
-version = "1.0.4"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cairo-rs"
-version = "0.5.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cairo-sys-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cairo-sys-rs 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "cairo-sys-rs"
-version = "0.7.0"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "glib 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -56,11 +59,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "clap"
-version = "2.32.0"
+version = "2.33.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "textwrap 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -76,105 +79,105 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "gdk"
-version = "0.9.0"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "cairo-rs 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cairo-sys-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk-pixbuf 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cairo-rs 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cairo-sys-rs 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-pixbuf 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "pango 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pango 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gdk-pixbuf"
-version = "0.5.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gdk-pixbuf-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-pixbuf-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gdk-pixbuf-sys"
-version = "0.7.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gio-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gdk-sys"
-version = "0.7.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cairo-sys-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk-pixbuf-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cairo-sys-rs 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-pixbuf-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "pango-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pango-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gio"
-version = "0.5.1"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fragile 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gio-sys"
-version = "0.7.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "glib"
-version = "0.6.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "glib-sys"
-version = "0.7.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -183,52 +186,54 @@ dependencies = [
 
 [[package]]
 name = "gobject-sys"
-version = "0.7.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gtk"
-version = "0.5.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "cairo-rs 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cairo-sys-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atk 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cairo-rs 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cairo-sys-rs 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk-pixbuf 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk-pixbuf-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gtk-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-pixbuf 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-pixbuf-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gtk-sys 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "pango 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pango 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pango-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gtk-sys"
-version = "0.7.0"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "atk-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cairo-sys-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk-pixbuf-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gdk-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gio-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atk-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cairo-sys-rs 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-pixbuf-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "pango-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pango-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -252,11 +257,6 @@ name = "maplit"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "memchr"
-version = "2.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "memmap"
 version = "0.7.0"
@@ -268,25 +268,25 @@ dependencies = [
 
 [[package]]
 name = "pango"
-version = "0.5.0"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
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- "glib 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "glib-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.71 (registry+https://github.com/rust-lang/crates.io-index)",
- "pango-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pango-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "0.7.0"
+version = "0.9.1"
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- "gobject-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gobject-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
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  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -306,7 +306,7 @@ dependencies = [
 
 [[package]]
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-version = "1.0.6"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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@@ -314,14 +314,10 @@ dependencies = [
 
 [[package]]
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-version = "1.1.9"
+version = "1.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
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- "utf8-ranges 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -333,20 +329,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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- "gtk 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gtk-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "cairo-sys-rs 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdk 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gio 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glib-sys 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gtk 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gtk-sys 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "maplit 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
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- "serde_yaml 0.8.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_yaml 0.8.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "xkbcommon 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -364,47 +360,39 @@ version = "1.0.111"
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- "syn 1.0.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "0.8.12"
+version = "0.8.13"
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  "serde 1.0.111 (registry+https://github.com/rust-lang/crates.io-index)",
- "yaml-rust 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "yaml-rust 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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-version = "1.0.30"
+version = "1.0.31"
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 dependencies = [
  "proc-macro2 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "0.10.0"
+version = "0.11.0"
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 dependencies = [
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-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-
 [[package]]
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@@ -415,11 +403,6 @@ name = "unicode-xid"
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-[[package]]
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-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
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@@ -450,57 +433,54 @@ dependencies = [
 
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-"checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
+"checksum serde_yaml 0.8.13 (registry+https://github.com/rust-lang/crates.io-index)" = "ae3e2dd40a7cdc18ca80db804b7f461a39bb721160a85c9a1fa30134bf3c02a5"
+"checksum syn 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)" = "b5304cfdf27365b7585c25d4af91b35016ed21ef88f17ced89c7093b43dba8b6"
+"checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
 "checksum unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "caaa9d531767d1ff2150b9332433f32a24622147e5ebb1f26409d5da67afd479"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
-"checksum utf8-ranges 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b4ae116fef2b7fea257ed6440d3cfcff7f190865f170cdad00bb6465bf18ecba"
 "checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 "checksum xkbcommon 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fda0ea5f7ddabd51deeeda7799bee06274112f577da7dd3d954b8eda731b2fce"
-"checksum yaml-rust 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "65923dd1784f44da1d2c3dbbc5e822045628c590ba72123e1c73d3c230c4434d"
+"checksum yaml-rust 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "39f0c922f1a334134dc2f7a8b67dc5d25f0735263feec974345ff706bcf20b0d"
diff --git a/Cargo.toml b/Cargo.toml.in
similarity index 53%
rename from Cargo.toml
rename to Cargo.toml.in
index e59996fc..887bca26 100644
--- a/Cargo.toml
+++ b/Cargo.toml.in
@@ -2,46 +2,39 @@
 name = "rs"
 version = "0.1.0"
 
-[dependencies]
-bitflags = "1.0.*"
-clap = { version = "2.32.*", default-features = false }
-maplit = "1.0.*"
-regex = "1.1.*"
-serde = { version = "1.0.*", features = ["derive"] }
-serde_yaml = "0.8.*"
-xkbcommon = { version = "0.4.*", features = ["wayland"] }
+[lib]
+name = "rs"
+path = "@path@/src/lib.rs"
+crate-type = ["staticlib", "rlib"]
 
-[dependencies.cairo-rs]
-version = "0.5.*"
+# Cargo can't do autodiscovery if Cargo.toml is not in the root.
+[[bin]]
+name = "test_layout"
+path = "@path@/src/bin/test_layout.rs"
 
+[[example]]
+name = "test_layout"
+path = "@path@/examples/test_layout.rs"
+
+[features]
+gio_v0_5 = []
+gtk_v0_5 = []
+
+# Dependencies which don't change based on build flags
 [dependencies.cairo-sys-rs]
 version = ""
 
-[dependencies.gdk]
-version = ""
-
-[dependencies.gio]
-version = ""
-features = ["v2_44"]
-
-[dependencies.glib]
-version = ""
-features = ["v2_44"]
-
 [dependencies.glib-sys]
 version = ""
 features = ["v2_44"]
 
-[dependencies.gtk]
-version = "0.5.*"
-features = ["v3_22"]
-
 [dependencies.gtk-sys]
 version = ""
 features = ["v3_22"]
 
-
-[lib]
-name = "rs"
-path = "src/lib.rs"
-crate-type = ["staticlib", "rlib"]
+[dependencies]
+maplit = "1.0.*"
+serde = { version = "1.0.*", features = ["derive"] }
+serde_yaml = "0.8.*"
+xkbcommon = { version = "0.4.*", features = ["wayland"] }
+# Here is inserted the Cargo.deps file
diff --git a/cargo.sh b/cargo.sh
index 434340b4..c4be97b4 100755
--- a/cargo.sh
+++ b/cargo.sh
@@ -13,5 +13,10 @@ CARGO_TARGET_DIR="$(pwd)"
 export CARGO_TARGET_DIR
 
 cd "$SOURCE_DIR"
-cargo "$@"
+
+# the 'run" command takes arguments at the end,
+# so --manifest-path must not be last
+CMD="$1"
+shift
+cargo "$CMD" --manifest-path "$CARGO_TARGET_DIR"/Cargo.toml "$@"
 
diff --git a/debian/rules b/debian/rules
index fa33deb5..8e5b6bd6 100755
--- a/debian/rules
+++ b/debian/rules
@@ -3,13 +3,20 @@
 export CARGO_HOME = $(CURDIR)/debian/cargo
 export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 
+distrel := $(shell lsb_release --codename --short)
+ifneq (,$(filter $(distrel),buster amber))
+	legacy = true
+else
+	legacy = false
+endif
+
 %:
 	dh $@ --builddirectory=_build --buildsystem=meson
 
 # The Debian version of linked-hash-map doesn't provide any hash,
 # causing Cargo to refuse to build with a crates.io copy
-build-arch:
+override_dh_auto_configure:
 	[ ! -f Cargo.lock ] || rm Cargo.lock
-	dh $@ --builddirectory=_build --buildsystem=meson
+	dh_auto_configure -- -Dlegacy=$(legacy)
 
 override_dh_autoreconf:
diff --git a/doc/hacking.md b/doc/hacking.md
index 7b016f63..551b701b 100644
--- a/doc/hacking.md
+++ b/doc/hacking.md
@@ -175,10 +175,11 @@ All Cargo dependencies must be selected in the version available in PureOS, and
 
 Dependencies must be specified in `Cargo.toml` with 2 numbers: "major.minor". Since bugfix version number is meant to not affect the interface, this allows for safe updates.
 
-`Cargo.lock` is used for remembering the revisions of all Rust dependencies. It should be updated often, preferably with each bugfix revision, and in a commit on its own:
+`Cargo.lock` is used for remembering the revisions of all Rust dependencies. It must correspond to the default dependency configuration: without flags to use older or newer versions of dependencies. It should be updated often, preferably with each bugfix revision, and in a commit on its own:
 
 ```
 cd build_dir
+ninja build src/Cargo.toml
 sh /source_path/cargo.sh update
 ninja test
 ```
diff --git a/meson.build b/meson.build
index a4311737..810d3bdb 100644
--- a/meson.build
+++ b/meson.build
@@ -61,6 +61,32 @@ summary = [
 ]
 message('\n'.join(summary))
 
+# Rust deps are changing, depending on compile flags. Cargo can't handle it alone.
+cargo_toml_in = files('Cargo.toml.in')
+path_data = configuration_data()
+path_data.set('path', meson.source_root())
+cargo_toml_base = configure_file(
+    input: 'Cargo.toml.in',
+    output: 'Cargo.toml.base',
+    configuration: path_data,
+)
+
+
+cargo_deps = files('Cargo.deps')
+
+if get_option('legacy') == true
+    cargo_build_flags += ['--features', 'gtk_v0_5,gio_v0_5']
+    cargo_deps = files('Cargo.deps.legacy')
+endif
+    
+cat = find_program('cat')
+cargo_toml = custom_target(
+    'Cargo.toml',
+    output: 'Cargo.toml',
+    command: [cat, cargo_toml_base, cargo_deps],
+    capture: true,
+)
+
 dep_cargo = find_program('cargo')
 cargo_script = find_program('cargo.sh')
 cargo_build = find_program('cargo_build.sh')
diff --git a/meson_options.txt b/meson_options.txt
index 339e1ba3..180f12f3 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -6,3 +6,7 @@ option('depdatadir',
 option('tests',
        type: 'boolean', value: true,
        description: 'Whether to compile unit tests')
+
+option('legacy',
+       type: 'boolean', value: false,
+       description: 'Build with Deban Buster versions of dependencies')
diff --git a/src/data.rs b/src/data.rs
index 163b7b30..4ff7cc2d 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -741,10 +741,19 @@ mod tests {
     use std::error::Error as ErrorTrait;
     use ::logging::ProblemPanic;
 
+    const THIS_FILE: &str = file!();
+
+    fn path_from_root(file: &'static str) -> PathBuf {
+        PathBuf::from(THIS_FILE)
+            .parent().unwrap()
+            .parent().unwrap()
+            .join(file)
+    }
+
     #[test]
     fn test_parse_path() {
         assert_eq!(
-            Layout::from_file(PathBuf::from("tests/layout.yaml")).unwrap(),
+            Layout::from_file(path_from_root("tests/layout.yaml")).unwrap(),
             Layout {
                 margins: Margins { top: 0f64, bottom: 0f64, side: 0f64 },
                 views: hashmap!(
@@ -771,7 +780,7 @@ mod tests {
     /// Check if the default protection works
     #[test]
     fn test_empty_views() {
-        let out = Layout::from_file(PathBuf::from("tests/layout2.yaml"));
+        let out = Layout::from_file(path_from_root("tests/layout2.yaml"));
         match out {
             Ok(_) => assert!(false, "Data mistakenly accepted"),
             Err(e) => {
@@ -789,7 +798,7 @@ mod tests {
 
     #[test]
     fn test_extra_field() {
-        let out = Layout::from_file(PathBuf::from("tests/layout3.yaml"));
+        let out = Layout::from_file(path_from_root("tests/layout3.yaml"));
         match out {
             Ok(_) => assert!(false, "Data mistakenly accepted"),
             Err(e) => {
@@ -808,7 +817,7 @@ mod tests {
     
     #[test]
     fn test_layout_punctuation() {
-        let out = Layout::from_file(PathBuf::from("tests/layout_key1.yaml"))
+        let out = Layout::from_file(path_from_root("tests/layout_key1.yaml"))
             .unwrap()
             .build(ProblemPanic).0
             .unwrap();
@@ -823,7 +832,7 @@ mod tests {
 
     #[test]
     fn test_layout_unicode() {
-        let out = Layout::from_file(PathBuf::from("tests/layout_key2.yaml"))
+        let out = Layout::from_file(path_from_root("tests/layout_key2.yaml"))
             .unwrap()
             .build(ProblemPanic).0
             .unwrap();
@@ -839,7 +848,7 @@ mod tests {
     /// Test multiple codepoints
     #[test]
     fn test_layout_unicode_multi() {
-        let out = Layout::from_file(PathBuf::from("tests/layout_key3.yaml"))
+        let out = Layout::from_file(path_from_root("tests/layout_key3.yaml"))
             .unwrap()
             .build(ProblemPanic).0
             .unwrap();
@@ -916,7 +925,7 @@ mod tests {
 
     #[test]
     fn test_layout_margins() {
-        let out = Layout::from_file(PathBuf::from("tests/layout_margins.yaml"))
+        let out = Layout::from_file(path_from_root("tests/layout_margins.yaml"))
             .unwrap()
             .build(ProblemPanic).0
             .unwrap();
diff --git a/src/meson.build b/src/meson.build
index 1502dd31..7cc3ce73 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -55,7 +55,8 @@ rslibs = custom_target(
     output: ['librs.a'],
     install: false,
     console: true,
-    command: [cargo_build] + cargo_build_flags + ['@OUTPUT@', '--lib']
+    command: [cargo_build] + ['@OUTPUT@', '--lib'] + cargo_build_flags,
+    depends: cargo_toml,
 )
 
 build_rstests = custom_target(
@@ -69,17 +70,17 @@ build_rstests = custom_target(
     output: ['src'],
     install: false,
     console: true,
-    command: [cargo_script, 'test', '--no-run'],
-    depends: rslibs, # no point building tests if the code itself fails
+    command: [cargo_script, 'test', '--no-run'] + cargo_build_flags,
+    depends: [rslibs, cargo_toml], # no point building tests if the code itself fails
 )
 
 test(
     'rstest',
     cargo_script,
-    args: ['test'],
+    args: ['test'] + cargo_build_flags,
     # this is a whole Carg-based test suite, let it run for a while
     timeout: 900,
-    depends: build_rstests,
+    depends: [build_rstests, cargo_toml],
 )
 
 libsqueekboard = static_library('libsqueekboard',
diff --git a/src/popover.rs b/src/popover.rs
index 96d3a971..65551a23 100644
--- a/src/popover.rs
+++ b/src/popover.rs
@@ -11,11 +11,15 @@ use ::logging;
 use ::manager;
 use ::resources;
 
+// Traits
 use gio::ActionMapExt;
 use gio::SettingsExt;
+#[cfg(feature = "gio_v0_5")]
 use gio::SimpleActionExt;
 use glib::translate::FromGlibPtrNone;
 use glib::variant::ToVariant;
+#[cfg(not(feature = "gtk_v0_5"))]
+use gtk::BuilderExtManual;
 use gtk::PopoverExt;
 use gtk::WidgetExt;
 use std::io::Write;
diff --git a/tests/meson.build b/tests/meson.build
index aeb0b146..67b7983b 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -69,7 +69,9 @@ foreach layout : [
     test(
         'test_layout_' + layout,
         cargo_script,
-        args: ['run', '--example', 'test_layout', layout]
+        args: ['run'] + cargo_build_flags
+            + [ '--example', 'test_layout', '--', layout],
+        workdir: meson.build_root(),
     )
 endforeach
 
diff --git a/tools/meson.build b/tools/meson.build
index 9246326a..75a7e179 100644
--- a/tools/meson.build
+++ b/tools/meson.build
@@ -12,8 +12,9 @@ test_layout = custom_target('squeekboard-test-layout',
     build_always_stale: true,
     output: ['squeekboard-test-layout'],
     console: true,
-    command: [cargo_build] + cargo_build_flags
-        + ['--rename', 'test_layout', '@OUTPUT@', '--bin', 'test_layout'],
+    command: [cargo_build, '--rename', 'test_layout', '@OUTPUT@', '--bin', 'test_layout']
+        + cargo_build_flags,
     install: true,
     install_dir: bindir,
+    depends: cargo_toml,
 )