diff --git a/flake.lock b/flake.lock
index 79fef6d..6d6f074 100644
--- a/flake.lock
+++ b/flake.lock
@@ -193,6 +193,21 @@
         "type": "github"
       }
     },
+    "flake-utils_4": {
+      "locked": {
+        "lastModified": 1623875721,
+        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -499,6 +514,7 @@
         "pure": "pure",
         "radialstatus": "radialstatus",
         "rolecolor-everywhere": "rolecolor-everywhere",
+        "rust-overlay": "rust-overlay",
         "spotify-adblock": "spotify-adblock",
         "theme-toggler": "theme-toggler",
         "tokyonight": "tokyonight",
@@ -512,6 +528,27 @@
         "zsh-history-substring-search": "zsh-history-substring-search"
       }
     },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_4",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1637115307,
+        "narHash": "sha256-G+RKZeE1yLrnq+ExHF+HnSJsT+QJWebGhssgZHz3B00=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "8a2e5fa870df3d34667d28fb3383d19516d182e4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
     "spotify-adblock": {
       "flake": false,
       "locked": {
diff --git a/flake.nix b/flake.nix
index bcee73f..4b8967c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -28,6 +28,10 @@
     tree-sitter-glimmer = { url = "github:alexlafroscia/tree-sitter-glimmer"; flake = false; };
     tree-sitter-jsonc = { url = "gitlab:WhyNotHugo/tree-sitter-jsonc"; flake = false; };
 
+    # shells
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
+
     # powercord plugins/themes
     better-status-indicators = { url = "github:griefmodz/better-status-indicators"; flake = false; };
     channel-typing = { url = "github:powercord-community/channel-typing"; flake = false; };
@@ -81,6 +85,7 @@
       nixosConfigurations."blossom" = mkSystem "blossom" "x86_64-linux" true;
       nixosConfigurations."fondue" = mkSystem "fondue" "x86_64-linux" false;
 
+      devShells.x86_64-linux = pkgs.callPackage ./shells { inherit inputs; };
       packages.x86_64-linux = pkgs.me;
     };
 }
diff --git a/modules/system/base.nix b/modules/system/base.nix
index 394ebf5..cdcc838 100644
--- a/modules/system/base.nix
+++ b/modules/system/base.nix
@@ -20,6 +20,7 @@
   };
   nix.registry.config.flake = inputs.self;
   nix.registry.nixpkgs.flake = inputs.nixpkgs;
+  nix.registry.shells.flake = inputs.self;
 
   home-manager = {
     useGlobalPkgs = true;
diff --git a/shells/cs/default.nix b/shells/cs/default.nix
new file mode 100644
index 0000000..8f7e42a
--- /dev/null
+++ b/shells/cs/default.nix
@@ -0,0 +1,14 @@
+{
+  callPackage,
+  lib,
+  mkShell,
+  dotnetCorePackages
+}:
+mkShell {
+  nativeBuildInputs = [ (with dotnetCorePackages; combinePackages [ sdk_6_0 runtime_6_0 ]) ];
+  DOTNET_CLI_TELEMETRY_OPTOUT = 1;
+
+  passthru = {
+    osu = callPackage ./osu.nix {};
+  };
+}
diff --git a/shells/cs/osu.nix b/shells/cs/osu.nix
new file mode 100644
index 0000000..b85070b
--- /dev/null
+++ b/shells/cs/osu.nix
@@ -0,0 +1,80 @@
+# Flake for development on https://github.com/ppy/osu
+{
+  lib,
+  mkShell,
+  writeScript,
+  stdenv,
+  stdenvNoCC,
+
+  dotnetCorePackages,
+
+  alsa-lib,
+  ffmpeg_4,
+  icu,
+  lltng-ust,
+  numactl,
+  openssl,
+  SDL2
+}:
+let
+  baseBuild = "-f net5.0 -v minimal /property:Version=$OSU_VERSION osu.Desktop -- $@";
+
+  deps = [
+    alsa-lib ffmpeg_4 icu lttng-ust numactl openssl SDL2 
+  ];
+
+  fixSdl = writeScript "osu-fixsdl" ''
+    ln -sft osu.Desktop/bin/Debug/net5.0/linux-x64/ ${SDL2}/lib/libSDL2${stdenv.hostPlatform.extensions.sharedLibrary}
+    ln -sft osu.Desktop/bin/Release/net5.0/linux-x64/ ${SDL2}/lib/libSDL2${stdenv.hostPlatform.extensions.sharedLibrary}
+  '';
+  buildScript = writeScript "osu-build" ''
+    rm -f osu.Desktop/bin/Debug/net5.0/linux-x64/libSDL2.so
+    dotnet build -c Debug -r linux-x64 ${baseBuild} && ${fixSdl}
+  '';
+  buildReleaseScript = writeScript "osu-build-rel" ''
+    rm -f osu.Desktop/bin/Release/net5.0/linux-x64/libSDL2.so
+    dotnet build -c Release -r linux-x64 ${baseBuild} && ${fixSdl}
+  '';
+  publishScript = writeScript "osu-publish" ''
+    rm -f osu.Desktop/bin/Release/net5.0/linux-x64/libSDL2.so
+    dotnet publish -c Release -r linux-x64 --self-contained false ${baseBuild} && ${fixSdl}
+  '';
+  publishWinScript = writeScript "osu-publish-win" ''
+    dotnet publish -c Release -r win-x64 --self-contained false -o build-win ${baseBuild}
+  '';
+  runScript = writeScript "osu-run" ''
+    ${buildScript} && dotnet run --no-build -c Debug -f net5.0 -r linux-x64 -p osu.Desktop -v minimal -- $@
+  '';
+  runReleaseScript = writeScript "osu-run-rel" ''
+    ${buildReleaseScript} && dotnet run --no-build -c Release -f net5.0 -r linux-x64 -p osu.Desktop -v minimal -- $@
+  '';
+
+  scripts = stdenvNoCC.mkDerivation {
+    pname = "osu-scripts";
+    version = "1.0.0";
+    dontUnpack = true;
+    installPhase = ''
+      mkdir $out
+      cp ${fixSdl} $out/osu-fixsdl
+      cp ${buildScript} $out/osu-build
+      cp ${buildReleaseScript} $out/osu-build-rel
+      cp ${publishScript} $out/osu-publish
+      cp ${publishWinScript} $out/osu-publish-win
+      cp ${runScript} $out/osu-run
+      cp ${runReleaseScript} $out/osu-run-rel
+    '';
+  };
+in mkShell {
+  nativeBuildInputs = [
+    icu
+
+    (with dotnetCorePackages; combinePackages [ sdk_5_0 runtime_5_0 ])
+  ];
+
+  DOTNET_CLI_TELEMETRY_OPTOUT = 1;
+  DRI_PRIME = 1;
+  LD_LIBRARY_PATH = lib.makeLibraryPath deps;
+  shellHook = ''
+    export PATH="${scripts}:$PATH"
+  '';
+}
diff --git a/shells/default.nix b/shells/default.nix
new file mode 100644
index 0000000..d4a08da
--- /dev/null
+++ b/shells/default.nix
@@ -0,0 +1,7 @@
+{ callPackage, inputs }: {
+  cs = callPackage ./cs {};
+  flutter = callPackage ./flutter {};
+  js = callPackage ./js {};
+  php = callPackage ./php {};
+  rust = callPackage ./rust { inherit inputs; };
+}
diff --git a/shells/flutter/default.nix b/shells/flutter/default.nix
new file mode 100644
index 0000000..0f49c4d
--- /dev/null
+++ b/shells/flutter/default.nix
@@ -0,0 +1,53 @@
+{
+  lib,
+  mkShell,
+
+  flutter,
+  clang,
+  cmake,
+  ninja,
+  pkg-config,
+
+  atk,
+  cairo,
+  gdk-pixbuf,
+  glib,
+  gtk3,
+  harfbuzz,
+  libGL,
+  pango,
+  wayland,
+  xorg,
+}:
+let
+  makeIncludePath = lib.makeSearchPathOutput "include" "include";
+
+  includePath = makeIncludePath [
+    xorg.xorgproto
+    xorg.libX11.dev
+  ];
+in mkShell {
+  nativeBuildInputs = [
+    flutter
+    clang
+    cmake
+    ninja
+    pkg-config
+  ];
+
+  C_INCLUDE_PATH = includePath;
+  CPLUS_INCLUDE_PATH = includePath;
+
+  LD_LIBRARY_PATH = lib.makeLibraryPath "/lib" [
+    atk
+    cairo
+    gdk-pixbuf
+    glib
+    gtk3
+    harfbuzz
+    libGL
+    pango
+    wayland
+    xorg.libX11
+  ];
+}
diff --git a/shells/js/default.nix b/shells/js/default.nix
new file mode 100644
index 0000000..12fac7d
--- /dev/null
+++ b/shells/js/default.nix
@@ -0,0 +1,19 @@
+{
+  mkShell,
+
+  nodejs-16_x,
+  nodePackages,
+  watchman
+}:
+mkShell {
+  buildInputs = [
+    nodejs-16_x
+    watchman
+
+    nodePackages.pnpm
+  ];
+
+  shellHook = ''
+    export PATH="$(readlink -f ./node_modules/.bin):$PATH"
+  '';
+}
diff --git a/shells/php/default.nix b/shells/php/default.nix
new file mode 100644
index 0000000..f0777dd
--- /dev/null
+++ b/shells/php/default.nix
@@ -0,0 +1,16 @@
+{
+  callPackage,
+  mkShell,
+  php80,
+  php80Packages,
+}:
+mkShell {
+  buildInputs = [
+    php80
+    php80Packages.composer
+  ];
+
+  passthru = {
+    osu-web = callPackage ./osu-web.nix {};
+  };
+}
diff --git a/shells/php/osu-web.nix b/shells/php/osu-web.nix
new file mode 100644
index 0000000..582979b
--- /dev/null
+++ b/shells/php/osu-web.nix
@@ -0,0 +1,26 @@
+# Flake for development on https://github.com/ppy/osu-web
+{
+  mkShell,
+  nodejs-14_x,
+  nodePackages,
+  php80,
+  php80Packages,
+  python3
+}:
+let
+  phpPkg = php80.withExtensions ({ enabled, all }:
+    enabled ++ [ all.intl all.redis ]
+  );
+in mkShell {
+  buildInputs = [
+    nodejs-14_x
+    nodePackages.yarn
+    phpPkg
+    php80Packages.composer
+    python3
+  ];
+
+  shellHook = ''
+    export PATH="$(readlink -f ./node_modules/.bin):$PATH"
+  '';
+}
diff --git a/shells/rust/default.nix b/shells/rust/default.nix
new file mode 100644
index 0000000..65f1877
--- /dev/null
+++ b/shells/rust/default.nix
@@ -0,0 +1,25 @@
+{
+  inputs,
+  mkShell,
+
+  pkg-config
+}:
+let
+  overlays = [ (import inputs.rust-overlay) ];
+  pkgs = import inputs.nixpkgs {
+    inherit system overlays;
+  };
+
+  toolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain;
+
+  rustPlatform = pkgs.makeRustPlatform {
+    inherit (toolchain) cargo rustc;
+  };
+in mkShell {
+  nativeBuildInputs = [
+    toolchain
+    pkg-config
+  ];
+
+  RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
+}