diff --git a/pkgs/by-name/gl/glycin-loaders/package.nix b/pkgs/by-name/gl/glycin-loaders/package.nix
index f9b97462d915..bb6e645bb5f1 100644
--- a/pkgs/by-name/gl/glycin-loaders/package.nix
+++ b/pkgs/by-name/gl/glycin-loaders/package.nix
@@ -20,8 +20,20 @@
   shared-mime-info,
   rustc,
   rustPlatform,
+
+  # List of loaders to build.
+  # https://gitlab.gnome.org/GNOME/glycin/-/blob/2.1.1/meson_options.txt?ref_type=tags#L26-43
+  enabledLoaders ? [
+    "heif"
+    "image-rs"
+    "jxl"
+    "svg"
+  ],
 }:
 
+# Doesn't produce any output if no loaders are enabled
+assert enabledLoaders != [ ];
+
 stdenv.mkDerivation (finalAttrs: {
   pname = "glycin-loaders";
 
@@ -59,12 +71,15 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   mesonFlags = [
-    "-Dglycin-loaders=true"
-    "-Dglycin-thumbnailer=false"
-    "-Dlibglycin=false"
-    "-Dlibglycin-gtk4=false"
-    "-Dvapi=false"
+    (lib.mesonBool "glycin-loaders" true)
+    (lib.mesonBool "glycin-thumbnailer" false)
+    (lib.mesonBool "libglycin" false)
+    (lib.mesonBool "libglycin-gtk4" false)
+    (lib.mesonBool "vapi" false)
     (lib.mesonBool "tests" finalAttrs.finalPackage.doCheck)
+    (lib.mesonOption "loaders" (
+      lib.concatMapStringsSep "," (loader: "glycin-${loader}") enabledLoaders
+    ))
   ];
 
   strictDeps = true;
@@ -88,9 +103,16 @@ stdenv.mkDerivation (finalAttrs: {
     export XDG_CACHE_HOME=$(mktemp -d)
   '';
 
+  # Thumbnailer files are provided by glycin-thumbnailer
+  postInstall = ''
+    rm -r $out/share/thumbnailers
+  '';
+
   env.CARGO_BUILD_TARGET = stdenv.hostPlatform.rust.rustcTargetSpec;
 
   passthru = {
+    inherit enabledLoaders;
+
     tests = {
       withTests = finalAttrs.finalPackage.overrideAttrs {
         doCheck = true;
@@ -102,10 +124,12 @@ stdenv.mkDerivation (finalAttrs: {
     description = "Glycin loaders for several formats";
     homepage = "https://gitlab.gnome.org/GNOME/glycin";
     teams = [ lib.teams.gnome ];
-    license = with lib.licenses; [
-      mpl20 # or
-      lgpl21Plus
-    ];
+    license =
+      with lib.licenses;
+      OR [
+        mpl20
+        lgpl21Plus
+      ];
     platforms = lib.platforms.linux;
   };
 })
diff --git a/pkgs/by-name/gl/glycin-thumbnailer/package.nix b/pkgs/by-name/gl/glycin-thumbnailer/package.nix
new file mode 100644
index 000000000000..f90b4dd1e43e
--- /dev/null
+++ b/pkgs/by-name/gl/glycin-thumbnailer/package.nix
@@ -0,0 +1,100 @@
+{
+  lib,
+  stdenv,
+  callPackage,
+  cargo,
+  fontconfig,
+  glib,
+  glycin-loaders,
+  glycin-thumbnailer,
+  libglycin,
+  libseccomp,
+  meson,
+  ninja,
+  pkg-config,
+  rustc,
+  rustPlatform,
+  wrapGAppsNoGuiHook,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "glycin-thumbnailer";
+
+  inherit (libglycin) version src cargoDeps;
+
+  nativeBuildInputs = [
+    cargo
+    libglycin.patchVendorHook
+    meson
+    ninja
+    pkg-config
+    rustc
+    rustPlatform.cargoSetupHook
+    wrapGAppsNoGuiHook
+  ];
+
+  buildInputs = [
+    fontconfig
+    glib
+    glycin-loaders
+    libglycin
+    libglycin.setupHook
+    libseccomp
+  ];
+
+  mesonFlags = [
+    (lib.mesonBool "glycin-loaders" false)
+    (lib.mesonBool "glycin-thumbnailer" true)
+    (lib.mesonBool "libglycin" false)
+    (lib.mesonBool "libglycin-gtk4" false)
+  ];
+
+  strictDeps = true;
+  __structuredAttrs = true;
+
+  # Thumbnailer files are in `glycin-loaders`, but we provide them in this package
+  postInstall = ''
+    mkdir -p $out/share/thumbnailers
+    (
+      shopt -s failglob
+
+      for loader in ${lib.concatStringsSep " " glycin-loaders.passthru.enabledLoaders}; do
+        substitute \
+          "../glycin-loaders/glycin-$loader/glycin-$loader.thumbnailer.in" \
+          "$out/share/thumbnailers/glycin-$loader.thumbnailer" \
+          --subst-var-by "BINDIR" "$out/bin"
+      done
+    )
+  '';
+
+  passthru.tests = {
+    all-loaders = glycin-thumbnailer.override {
+      glycin-loaders = glycin-loaders.override {
+        enabledLoaders = [
+          "heif"
+          "image-rs"
+          "jxl"
+          "raw"
+          "svg"
+        ];
+      };
+    };
+    thumbnailer = callPackage ./tests.nix { };
+  };
+
+  meta = {
+    description = "Glycin thumbnailers for several formats";
+    homepage = "https://gitlab.gnome.org/GNOME/glycin";
+    changelog = "https://gitlab.gnome.org/GNOME/glycin/-/tags/${finalAttrs.version}";
+    license =
+      with lib.licenses;
+      OR [
+        mpl20
+        lgpl21Plus
+      ];
+    maintainers = with lib.maintainers; [ thunze ];
+    teams = [ lib.teams.gnome ];
+    platforms = lib.platforms.linux;
+    mainProgram = "glycin-thumbnailer";
+  };
+})
diff --git a/pkgs/by-name/gl/glycin-thumbnailer/tests.nix b/pkgs/by-name/gl/glycin-thumbnailer/tests.nix
new file mode 100644
index 000000000000..da7f2a845de1
--- /dev/null
+++ b/pkgs/by-name/gl/glycin-thumbnailer/tests.nix
@@ -0,0 +1,44 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitLab,
+  glycin-thumbnailer,
+  shared-mime-info,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "glycin-thumbnailer-test";
+  inherit (glycin-thumbnailer) version;
+
+  src = fetchFromGitLab {
+    domain = "gitlab.gnome.org";
+    owner = "sophie-h";
+    repo = "test-images";
+    rev = "f7a06d9131a5686c1b58c56f42f9fda9ea5e620d";
+    hash = "sha256-qoteYmliUha3lY21PRM0FaeYu9aD5MsygBTsTYog9SE=";
+  };
+
+  # Fix incorrectly detected MIME types
+  preBuild = ''
+    export XDG_DATA_DIRS=${shared-mime-info}/share:$XDG_DATA_DIRS
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+
+    cd images/
+    mkdir -p $out
+
+    for image in color/* icon/*; do
+      for size in 128 256 512 1024; do
+        input="file://$(realpath "$image")"
+        output="$out/$(basename "$image")-$size.png"
+
+        ${lib.getExe glycin-thumbnailer} -i "$input" -o "$output" -s $size
+        file -E "$output"
+      done
+    done
+
+    runHook postBuild
+  '';
+})
diff --git a/pkgs/by-name/li/libglycin-gtk4/package.nix b/pkgs/by-name/li/libglycin-gtk4/package.nix
index f5b46f1d68b3..b5181f595b22 100644
--- a/pkgs/by-name/li/libglycin-gtk4/package.nix
+++ b/pkgs/by-name/li/libglycin-gtk4/package.nix
@@ -96,10 +96,12 @@ stdenv.mkDerivation (finalAttrs: {
   meta = {
     description = "C-Bindings to convert glycin frames to GDK Textures";
     homepage = "https://gitlab.gnome.org/GNOME/glycin";
-    license = with lib.licenses; [
-      mpl20 # or
-      lgpl21Plus
-    ];
+    license =
+      with lib.licenses;
+      OR [
+        mpl20
+        lgpl21Plus
+      ];
     teams = [ lib.teams.gnome ];
     platforms = lib.platforms.linux;
     pkgConfigModules = [
diff --git a/pkgs/by-name/li/libglycin/package.nix b/pkgs/by-name/li/libglycin/package.nix
index 9ee9bb5df921..3a42bc136d27 100644
--- a/pkgs/by-name/li/libglycin/package.nix
+++ b/pkgs/by-name/li/libglycin/package.nix
@@ -15,6 +15,7 @@
   glib,
   gobject-introspection,
   glycin-loaders,
+  glycin-thumbnailer,
   libglycin-gtk4,
   fontconfig,
   libseccomp,
@@ -153,6 +154,7 @@ stdenv.mkDerivation (finalAttrs: {
     tests = {
       inherit
         glycin-loaders
+        glycin-thumbnailer
         libglycin-gtk4
         ;
     };
@@ -162,10 +164,12 @@ stdenv.mkDerivation (finalAttrs: {
     description = "Sandboxed and extendable image loading library";
     homepage = "https://gitlab.gnome.org/GNOME/glycin";
     changelog = "https://gitlab.gnome.org/GNOME/glycin/-/tags/${finalAttrs.version}";
-    license = with lib.licenses; [
-      mpl20 # or
-      lgpl21Plus
-    ];
+    license =
+      with lib.licenses;
+      OR [
+        mpl20
+        lgpl21Plus
+      ];
     maintainers = [ ];
     teams = [ lib.teams.gnome ];
     platforms = lib.platforms.linux;