diff --git a/flake.nix b/flake.nix
index 7da388c..1d66787 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,10 +13,10 @@
     {
       formatter = forAllSystems (system: nixos.legacyPackages.${system}.nixfmt-tree);
 
-      hmModules = import ./modules/home-manager self.lib;
+      hmModules = import ./modules/home-manager self.lib.hylonix;
 
       lib = import ./lib (nixos.lib // self.lib);
 
-      nixosModules = import ./modules/nixos self.lib;
+      nixosModules = import ./modules/nixos self.lib.hylonix;
     };
 }
diff --git a/lib/default.nix b/lib/default.nix
index aa298b3..88086be 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -23,7 +23,9 @@ lib: {
       f;
 
     recursiveMergeAll = builtins.foldl' lib.hylonix.recursiveMerge null;
+
+    compose = lib.trivial.flip (lib.foldr lib.trivial.id);
   };
 
-  inherit (lib.hylonix) recursiveMerge recursiveMergeAll;
+  inherit (lib.hylonix) compose recursiveMerge recursiveMergeAll;
 }
diff --git a/modules/home-manager/gecko-browser/gecko-lib/extensions.nix b/modules/home-manager/gecko-browser/gecko-lib/extensions.nix
index 8e32fe6..f1cbbaa 100644
--- a/modules/home-manager/gecko-browser/gecko-lib/extensions.nix
+++ b/modules/home-manager/gecko-browser/gecko-lib/extensions.nix
@@ -1,6 +1,7 @@
 {
   pkgs,
   lib,
+  sLib,
   info,
   ...
 }:
@@ -12,24 +13,28 @@ let
       options = {
         packages = lib.mkOption {
           type =
-            lib.types.listOf
-            <| lib.types.either lib.types.package
-            <| lib.types.submodule {
-              options = {
-                name = lib.mkOption {
-                  type = lib.types.str;
-                  default = name;
-                  example = "ublock-origin";
-                  description = "The short name of the extension. To find the short name look at the extension's download link.";
-                };
+            sLib.compose
+              [
+                lib.types.listOf
+                (lib.types.either lib.types.package)
+                (lib.types.submodule)
+              ]
+              {
+                options = {
+                  name = lib.mkOption {
+                    type = lib.types.str;
+                    default = name;
+                    example = "ublock-origin";
+                    description = "The short name of the extension. To find the short name look at the extension's download link.";
+                  };
 
-                guid = lib.mkOption {
-                  type = lib.types.str;
-                  example = "uBlock0@raymondhill.net";
-                  description = "The guid of the extension. To find the guid go to https://addons.mozilla.org/api/v5/addons/addon/\${shortName}/";
+                  guid = lib.mkOption {
+                    type = lib.types.str;
+                    example = "uBlock0@raymondhill.net";
+                    description = "The guid of the extension. To find the guid go to https://addons.mozilla.org/api/v5/addons/addon/\${shortName}/";
+                  };
                 };
               };
-            };
           default = [ ];
           description = ''
             Extensions to install for this profile. Takes either a package or a description of an extension.
@@ -65,37 +70,37 @@ let
       x:
       x
       // lib.optionalAttrs (x ? adminSettings) {
-        adminSettings =
+        adminSettings = sLib.compose [
           builtins.toJSON
-          <| (
+          (
             y:
             y
             // lib.optionalAttrs (y ? userFilters) {
               userFilters = builtins.concatStringsSep "\n" y.userFilters;
             }
           )
-          <| (
+          (
             y:
             y
             // lib.optionalAttrs (y ? urlFilteringString) {
               urlFilteringString = builtins.concatStringsSep "\n" y.urlFilteringString;
             }
           )
-          <| (
+          (
             y:
             y
             // lib.optionalAttrs (y ? hostnameSwitchesString) {
               hostnameSwitchesString = builtins.concatStringsSep "\n" y.hostnameSwitchesString;
             }
           )
-          <| (
+          (
             y:
             y
             // lib.optionalAttrs (y ? dynamicFilteringString) {
               dynamicFilteringString = builtins.concatStringsSep "\n" y.dynamicFilteringString;
             }
           )
-          <| x.adminSettings;
+        ] x.adminSettings;
       };
   };
   magic = guid: magicInfo.${guid} or lib.trivial.id;
@@ -123,9 +128,9 @@ in
     {
       policies = {
         "3rdparty".Extensions = extensions.settings;
-        ExtensionSettings =
+        ExtensionSettings = sLib.compose [
           builtins.listToAttrs
-          <| builtins.map (
+          (builtins.map (
             withExtension
               (x: {
                 name = x.addonId;
@@ -143,8 +148,8 @@ in
                   install_url = "https://addons.mozilla.org/firefox/downloads/latest/${x.name}/latest.xpi";
                 };
               })
-          )
-          <| extensions.packages;
+          ))
+        ] extensions.packages;
       };
       prefs."extensions.autoDisableScopes" = 0;
     };
@@ -152,6 +157,6 @@ in
   postprocess =
     { policies, ... }:
     lib.optionalAttrs (policies ? "3rdparty".Extensions) {
-      policies."3rdparty".Extensions = builtins.mapAttrs magic <| policies."3rdparty".Extensions or { };
+      policies."3rdparty".Extensions = builtins.mapAttrs magic (policies."3rdparty".Extensions or { });
     };
 }
diff --git a/modules/home-manager/gecko-browser/gecko-lib/prefs.nix b/modules/home-manager/gecko-browser/gecko-lib/prefs.nix
index 4980cde..d45a3d5 100644
--- a/modules/home-manager/gecko-browser/gecko-lib/prefs.nix
+++ b/modules/home-manager/gecko-browser/gecko-lib/prefs.nix
@@ -1,6 +1,7 @@
 {
   pkgs,
   lib,
+  sLib,
   info,
   ...
 }:
@@ -35,15 +36,15 @@ in
   postprocess =
     { lockPref, prefs, ... }:
     {
-      prefs =
-        builtins.concatStringsSep "\n"
-        <| (x: [ "// Generated by ${info.name} module" ] ++ x)
-        <| lib.mapAttrsToList (
+      prefs = sLib.compose [
+        (builtins.concatStringsSep "\n")
+        (x: [ "// Generated by ${info.name} module" ] ++ x)
+        (lib.mapAttrsToList (
           let
             prefFunc = if lockPref then "lockPref" else "user_pref";
           in
           key: val: ''${prefFunc}("${key}", ${builtins.toJSON val});''
-        )
-        <| prefs;
+        ))
+      ] prefs;
     };
 }
diff --git a/modules/home-manager/gecko-browser/gecko-lib/profiles.nix b/modules/home-manager/gecko-browser/gecko-lib/profiles.nix
index 7722c57..d7f5936 100644
--- a/modules/home-manager/gecko-browser/gecko-lib/profiles.nix
+++ b/modules/home-manager/gecko-browser/gecko-lib/profiles.nix
@@ -14,9 +14,17 @@ let
     builtins.concatMap (y: builtins.concatMap (x: f x y) xs) ys;
 
   # (Lib -> Profile -> c) -> ProfileSettings -> [c]
-  mapLibAndProfile = f: x: mapProduct f allLibs <| builtins.attrValues <| x;
+  mapLibAndProfile =
+    f:
+    sLib.compose [
+      (mapProduct f allLibs)
+      builtins.attrValues
+    ];
 
-  allLibs = builtins.attrValues <| lib.filterAttrs (k: _: k != "profiles") <| geckoLib;
+  allLibs = sLib.compose [
+    builtins.attrValues
+    (lib.filterAttrs (k: _: k != "profiles"))
+  ] geckoLib;
   allLibs' = allLibs ++ [ geckoLib.profiles ];
 
   submodule =
@@ -63,24 +71,23 @@ let
 
   writeProfilesIni = configPath: profileSettings: {
     name = "${configPath}/profiles.ini";
-    value.text =
-      lib.generators.toINI { }
-      <|
-        lib.mapAttrs' (
-          _: v:
-          lib.nameValuePair "Profile${builtins.toString v.id}" {
-            Name = v.name;
-            Path = v.path;
-            IsRelative = 1;
-            Default = if v.isDefault then 1 else 0;
-          }
-        ) profileSettings
-        // {
-          General = {
-            StartWithLastProfile = 1;
-            Version = 2;
-          };
+    value.text = lib.generators.toINI { } (
+      lib.mapAttrs' (
+        _: v:
+        lib.nameValuePair "Profile${builtins.toString v.id}" {
+          Name = v.name;
+          Path = v.path;
+          IsRelative = 1;
+          Default = if v.isDefault then 1 else 0;
+        }
+      ) profileSettings
+      // {
+        General = {
+          StartWithLastProfile = 1;
+          Version = 2;
         };
+      }
+    );
   };
 in
 {
@@ -92,30 +99,31 @@ in
 
   getDefaultProfileName =
     profileSettings:
-    builtins.head
-    <| builtins.filter (x: profileSettings.${x}.isDefault)
-    <| builtins.attrNames
-    <| profileSettings;
+    sLib.compose [
+      builtins.head
+      (builtins.filter (x: profileSettings.${x}.isDefault))
+      builtins.attrNames
+    ] profileSettings;
 
   process =
     { languagePacks, ... }:
     let
-      extractVersion =
+      extractVersion = sLib.compose [
         (x: if x == [ ] then info.base.version else builtins.head x)
-        <| builtins.match "([^-]*)-.*"
-        <| info.base.version;
+        (builtins.match "([^-]*)-.*")
+      ] info.base.version;
     in
     {
-      policies.ExtensionSettings =
+      policies.ExtensionSettings = sLib.compose [
         builtins.listToAttrs
-        <| builtins.map (lang: {
+        (builtins.map (lang: {
           name = "langpack-${lang}@firefox.mozilla.org";
           value = {
             installation_mode = "force_installed";
             install_url = "https://releases.mozilla.org/pub/firefox/releases/${extractVersion}/linux-x86_64/xpi/${lang}.xpi";
           };
-        })
-        <| languagePacks;
+        }))
+      ] languagePacks;
     };
 
   assertions = profiles: [
@@ -124,12 +132,12 @@ in
       message = "No profiles are defined.";
     }
     {
-      assertion =
+      assertion = sLib.compose [
         (x: x == 1)
-        <| builtins.length
-        <| builtins.filter (x: profiles.${x}.isDefault)
-        <| builtins.attrNames
-        <| profiles;
+        builtins.length
+        (builtins.filter (x: profiles.${x}.isDefault))
+        builtins.attrNames
+      ] profiles;
       message = "One, and only one, profile must be marked as 'isDefault'. If you have not set this option on any profile, then one and only one profile must have id '0'.";
     }
   ];
@@ -141,15 +149,21 @@ in
     let
       processLevel =
         level: userConfig:
-        sLib.recursiveMergeAll
-        <| (x: [ userConfig ] ++ x)
-        <| builtins.map (myLib: (myLib.${level} or (_: { })) userConfig)
-        <| allLibs';
+        sLib.compose [
+          sLib.recursiveMergeAll
+          (x: [ userConfig ] ++ x)
+          (builtins.map (myLib: (myLib.${level} or (_: { })) userConfig))
+        ] allLibs';
 
       # Internal libraries can create their own configuration that needs to be merged
       # into the user configuration (the user's takes priority). Generate that config.
       finalConfig = builtins.mapAttrs (
-        _: v: processLevel "postprocess" <| processLevel "process" <| processLevel "preprocess" <| v
+        _:
+        sLib.compose [
+          (processLevel "postprocess")
+          (processLevel "process")
+          (processLevel "preprocess")
+        ]
       ) profiles;
     in
     {
diff --git a/modules/home-manager/gecko-browser/gecko-lib/search.nix b/modules/home-manager/gecko-browser/gecko-lib/search.nix
index 50292d6..87c9e84 100644
--- a/modules/home-manager/gecko-browser/gecko-lib/search.nix
+++ b/modules/home-manager/gecko-browser/gecko-lib/search.nix
@@ -1,4 +1,4 @@
-{ lib, ... }:
+{ lib, sLib, ... }:
 
 let
   submodule =
@@ -80,8 +80,10 @@ let
       icon,
     }:
     let
-      params =
-        builtins.concatStringsSep "&" <| builtins.map (x: "${x.key}=${x.value}") <| searchUri.params;
+      params = sLib.compose [
+        (builtins.concatStringsSep "&")
+        (builtins.map (x: "${x.key}=${x.value}"))
+      ] searchUri.params;
     in
     {
       Name = name;
diff --git a/modules/home-manager/gecko-browser/gecko-lib/site-settings.nix b/modules/home-manager/gecko-browser/gecko-lib/site-settings.nix
index b9ff736..21dc972 100644
--- a/modules/home-manager/gecko-browser/gecko-lib/site-settings.nix
+++ b/modules/home-manager/gecko-browser/gecko-lib/site-settings.nix
@@ -150,15 +150,16 @@ in
 
       filterCookies =
         x:
-        builtins.concatLists
-        <| lib.mapAttrsToList (
-          k: v:
-          if builtins.elem v.cookies x then
-            [ "https://${k}/" ] ++ lib.optional (!v.https-only) "http://${k}/"
-          else
-            [ ]
-        )
-        <| site;
+        sLib.compose [
+          builtins.concatLists
+          (lib.mapAttrsToList (
+            k: v:
+            if builtins.elem v.cookies x then
+              [ "https://${k}/" ] ++ lib.optional (!v.https-only) "http://${k}/"
+            else
+              [ ]
+          ))
+        ] site;
 
       makeUboConf = domain: config: {
         adminSettings = {
@@ -204,7 +205,8 @@ in
           true
         ];
       };
-      extensions.settings."uBlock0@raymondhill.net" =
-        sLib.recursiveMergeAll <| [ (makeUboConf "*" default) ] ++ lib.mapAttrsToList makeUboConf site;
+      extensions.settings."uBlock0@raymondhill.net" = sLib.recursiveMergeAll (
+        [ (makeUboConf "*" default) ] ++ lib.mapAttrsToList makeUboConf site
+      );
     };
 }