diff --git a/pkgs/development/compilers/flutter/default.nix b/pkgs/development/compilers/flutter/default.nix
index 3eea7f596b6b..8572040cb0cd 100644
--- a/pkgs/development/compilers/flutter/default.nix
+++ b/pkgs/development/compilers/flutter/default.nix
@@ -1,40 +1,24 @@
-{ callPackage, dart }:
+{ callPackage, fetchurl, dart }:
+
 let
-  dart_stable = dart.override { version = "2.10.0"; };
-  dart_beta = dart.override { version = "2.10.0"; };
-  dart_dev = dart.override { version = "2.11.0-161.0.dev"; };
   mkFlutter = opts: callPackage (import ./flutter.nix opts) { };
   getPatches = dir:
     let files = builtins.attrNames (builtins.readDir dir);
     in map (f: dir + ("/" + f)) files;
+  version = "1.22.5";
+  channel = "stable";
+  filename = "flutter_linux_${version}-${channel}.tar.xz";
 in
 {
   mkFlutter = mkFlutter;
   stable = mkFlutter rec {
+    inherit dart version;
     pname = "flutter";
-    channel = "stable";
-    version = "1.22.0";
-    filename = "flutter_linux_${version}-${channel}.tar.xz";
-    sha256Hash = "0ryrx458ss8ryhmspcfrhjvad2pl46bxh1qk5vzwzhxiqdc79vm8";
-    patches = getPatches ./patches/stable;
-    dart = dart_stable;
-  };
-  beta = mkFlutter rec {
-    pname = "flutter";
-    channel = "beta";
-    version = "1.22.0-12.3.pre";
-    filename = "flutter_linux_${version}-${channel}.tar.xz";
-    sha256Hash = "1axzz137z4lgpa09h7bjf52i6dij6a9wmjbha1182db23r09plzh";
-    patches = getPatches ./patches/stable;
-    dart = dart_beta;
-  };
-  dev = mkFlutter rec {
-    pname = "flutter";
-    channel = "dev";
-    version = "1.23.0-7.0.pre";
-    filename = "flutter_linux_${version}-${channel}.tar.xz";
-    sha256Hash = "166qb4qbv051bc71yj7c0vrkamhvzz3fp3mz318qzm947mydwjj5";
-    patches = getPatches ./patches/dev;
-    dart = dart_dev;
+    patches = getPatches ./patches;
+    src = fetchurl {
+      url = "https://storage.googleapis.com/flutter_infra/releases/${channel}/linux/${filename}";
+      sha256 = "1dv5kczcj9npf7xxlanmpc9ijnxa3ap46521cxn14c0i3y9295ja";
+    };
+    depsSha256 = "0d7vhk6axgqajy2d9ia9lc6awcnz6cc3n04r7hnh7bx4hb0jv0l1";
   };
 }
diff --git a/pkgs/development/compilers/flutter/flutter.nix b/pkgs/development/compilers/flutter/flutter.nix
index a7ec87322507..e3fcf77e391c 100644
--- a/pkgs/development/compilers/flutter/flutter.nix
+++ b/pkgs/development/compilers/flutter/flutter.nix
@@ -1,10 +1,9 @@
-{ channel
-, pname
+{ pname
 , version
-, sha256Hash
 , patches
 , dart
-, filename ? "flutter_linux_${version}-${channel}.tar.xz"
+, src
+, depsSha256
 }:
 
 { bash
@@ -13,7 +12,8 @@
 , coreutils
 , git
 , runCommand
-, lib, stdenv
+, stdenv
+, lib
 , fetchurl
 , alsaLib
 , dbus
@@ -30,21 +30,20 @@
 , nspr
 , nss
 , systemd
+, callPackage
 }:
 let
-  drvName = "flutter-${channel}-${version}";
+  repository = callPackage ./repository.nix {
+    inherit src pname version dart depsSha256;
+  };
+  drvName = "flutter-${version}";
+
   flutter = stdenv.mkDerivation {
     name = "${drvName}-unwrapped";
 
-    src = fetchurl {
-      url =
-        "https://storage.googleapis.com/flutter_infra/releases/${channel}/linux/${filename}";
-      sha256 = sha256Hash;
-    };
+    buildInputs = [ git repository ];
 
-    buildInputs = [ git ];
-
-    inherit patches;
+    inherit src patches;
 
     postPatch = ''
       patchShebangs --build ./bin/
@@ -52,25 +51,25 @@ let
     '';
 
     buildPhase = ''
-      FLUTTER_ROOT=$(pwd)
-      FLUTTER_TOOLS_DIR="$FLUTTER_ROOT/packages/flutter_tools"
-      SNAPSHOT_PATH="$FLUTTER_ROOT/bin/cache/flutter_tools.snapshot"
-      STAMP_PATH="$FLUTTER_ROOT/bin/cache/flutter_tools.stamp"
-      SCRIPT_PATH="$FLUTTER_TOOLS_DIR/bin/flutter_tools.dart"
-      DART_SDK_PATH="${dart}"
+      export FLUTTER_ROOT="$(pwd)"
+      export FLUTTER_TOOLS_DIR="$FLUTTER_ROOT/packages/flutter_tools"
+      export SCRIPT_PATH="$FLUTTER_TOOLS_DIR/bin/flutter_tools.dart"
 
-      HOME=../.. # required for pub upgrade --offline, ~/.pub-cache
-                 # path is relative otherwise it's replaced by /build/flutter
+      mkdir -p "$out/bin/cache"
+      export SNAPSHOT_PATH="$out/bin/cache/flutter_tools.snapshot"
+      export STAMP_PATH="$out/bin/cache/flutter_tools.stamp"
 
-      (cd "$FLUTTER_TOOLS_DIR" && ${dart}/bin/pub upgrade --offline)
+      export DART_SDK_PATH="${dart}"
+      export PUB_CACHE="${repository}"
+
+      pushd "$FLUTTER_TOOLS_DIR"
+      ${dart}/bin/pub get --offline
+      popd
 
       local revision="$(cd "$FLUTTER_ROOT"; git rev-parse HEAD)"
       ${dart}/bin/dart --snapshot="$SNAPSHOT_PATH" --packages="$FLUTTER_TOOLS_DIR/.packages" "$SCRIPT_PATH"
       echo "$revision" > "$STAMP_PATH"
       echo -n "${version}" > version
-
-      rm -rf bin/cache/{artifacts,dart-sdk,downloads}
-      rm -f  bin/cache/*.stamp
     '';
 
     installPhase = ''
@@ -146,7 +145,7 @@ runCommand drvName
     homepage = "https://flutter.dev";
     license = licenses.bsd3;
     platforms = [ "x86_64-linux" ];
-    maintainers = with maintainers; [ babariviere ericdallo ];
+    maintainers = with maintainers; [ babariviere ericdallo thiagokokada ];
   };
 } ''
   mkdir -p $out/bin
diff --git a/pkgs/development/compilers/flutter/patches/dev/disable-auto-update.patch b/pkgs/development/compilers/flutter/patches/dev/disable-auto-update.patch
deleted file mode 100644
index f9ac00d1d323..000000000000
--- a/pkgs/development/compilers/flutter/patches/dev/disable-auto-update.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-diff --git a/bin/internal/shared.sh b/bin/internal/shared.sh
-index 22efe87443..c6954575c5 100644
---- a/bin/internal/shared.sh
-+++ b/bin/internal/shared.sh
-@@ -212,8 +212,6 @@ function shared::execute() {
-   # FLUTTER_TOOL_ARGS="--enable-asserts $FLUTTER_TOOL_ARGS"
-   # FLUTTER_TOOL_ARGS="$FLUTTER_TOOL_ARGS --observe=65432"
- 
--  upgrade_flutter 7< "$PROG_NAME"
--
-   BIN_NAME="$(basename "$PROG_NAME")"
-   case "$BIN_NAME" in
-     flutter*)
-diff --git a/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart b/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
-index fb1616ba96..b973b3fd58 100644
---- a/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
-+++ b/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
-@@ -291,13 +291,6 @@ class FlutterCommandRunner extends CommandRunner<void> {
-           globals.flutterUsage.suppressAnalytics = true;
-         }
- 
--        try {
--          await globals.flutterVersion.ensureVersionFile();
--        } on FileSystemException catch (e) {
--          globals.printError('Failed to write the version file to the artifact cache: "$e".');
--          globals.printError('Please ensure you have permissions in the artifact cache directory.');
--          throwToolExit('Failed to write the version file');
--        }
-         final bool machineFlag = topLevelResults['machine'] as bool;
-         if (topLevelResults.command?.name != 'upgrade' && topLevelResults['version-check'] as bool && !machineFlag) {
-           await globals.flutterVersion.checkFlutterVersionFreshness();
diff --git a/pkgs/development/compilers/flutter/patches/dev/move-cache.patch b/pkgs/development/compilers/flutter/patches/dev/move-cache.patch
deleted file mode 100644
index eb6ff5cf582e..000000000000
--- a/pkgs/development/compilers/flutter/patches/dev/move-cache.patch
+++ /dev/null
@@ -1,64 +0,0 @@
-diff --git a/dev/devicelab/lib/framework/runner.dart b/dev/devicelab/lib/framework/runner.dart
-index a059a8e992..b664a7070c 100644
---- a/dev/devicelab/lib/framework/runner.dart
-+++ b/dev/devicelab/lib/framework/runner.dart
-@@ -137,7 +137,7 @@ Future<void> cleanupSystem() async {
-       print('\nTelling Gradle to shut down (JAVA_HOME=$javaHome)');
-       final String gradlewBinaryName = Platform.isWindows ? 'gradlew.bat' : 'gradlew';
-       final Directory tempDir = Directory.systemTemp.createTempSync('flutter_devicelab_shutdown_gradle.');
--      recursiveCopy(Directory(path.join(flutterDirectory.path, 'bin', 'cache', 'artifacts', 'gradle_wrapper')), tempDir);
-+      recursiveCopy(Directory(path.join(globals.fsUtils.homeDirPath, '.cache', 'flutter', 'artifacts', 'gradle_wrapper')), tempDir);
-       copy(File(path.join(path.join(flutterDirectory.path, 'packages', 'flutter_tools'), 'templates', 'app', 'android.tmpl', 'gradle', 'wrapper', 'gradle-wrapper.properties')), Directory(path.join(tempDir.path, 'gradle', 'wrapper')));
-       if (!Platform.isWindows) {
-         await exec(
-diff --git a/packages/flutter_tools/lib/src/asset.dart b/packages/flutter_tools/lib/src/asset.dart
-index 36714c5fb4..c0cc049ee1 100644
---- a/packages/flutter_tools/lib/src/asset.dart
-+++ b/packages/flutter_tools/lib/src/asset.dart
-@@ -6,6 +6,7 @@ import 'package:meta/meta.dart';
- import 'package:package_config/package_config.dart';
- import 'package:yaml/yaml.dart';
- 
-+import 'base/common.dart';
- import 'base/context.dart';
- import 'base/file_system.dart';
- import 'base/utils.dart';
-@@ -397,7 +398,7 @@ List<_Asset> _getMaterialAssets(String fontSet) {
-     for (final Map<dynamic, dynamic> font in (family['fonts'] as List<dynamic>).cast<Map<dynamic, dynamic>>()) {
-       final Uri entryUri = globals.fs.path.toUri(font['asset'] as String);
-       result.add(_Asset(
--        baseDir: globals.fs.path.join(Cache.flutterRoot, 'bin', 'cache', 'artifacts', 'material_fonts'),
-+        baseDir: globals.fs.path.join(globals.fsUtils.homeDirPath, '.cache', 'flutter', 'artifacts', 'material_fonts'),
-         relativeUri: Uri(path: entryUri.pathSegments.last),
-         entryUri: entryUri,
-         package: null,
-diff --git a/packages/flutter_tools/lib/src/cache.dart b/packages/flutter_tools/lib/src/cache.dart
-index aaca036d78..43ff428f8d 100644
---- a/packages/flutter_tools/lib/src/cache.dart
-+++ b/packages/flutter_tools/lib/src/cache.dart
-@@ -226,8 +226,15 @@ class Cache {
-       return;
-     }
-     assert(_lock == null);
-+
-+    final Directory dir = globals.fs.directory(globals.fs.path.join(globals.fsUtils.homeDirPath, '.cache', 'flutter'));
-+    if (!dir.existsSync()) {
-+      dir.createSync(recursive: true);
-+      globals.os.chmod(dir, '755');
-+    }
-+
-     final File lockFile =
--        globals.fs.file(globals.fs.path.join(flutterRoot, 'bin', 'cache', 'lockfile'));
-+        globals.fs.file(globals.fs.path.join(globals.fsUtils.homeDirPath, '.cache', 'flutter', 'lockfile'));
-     try {
-       _lock = lockFile.openSync(mode: FileMode.write);
-     } on FileSystemException catch (e) {
-@@ -330,7 +337,7 @@ class Cache {
-     if (_rootOverride != null) {
-       return _fileSystem.directory(_fileSystem.path.join(_rootOverride.path, 'bin', 'cache'));
-     } else {
--      return _fileSystem.directory(_fileSystem.path.join(flutterRoot, 'bin', 'cache'));
-+      return _fileSystem.directory(_fileSystem.path.join(globals.fsUtils.homeDirPath, '.cache', 'flutter'));
-     }
-   }
- 
diff --git a/pkgs/development/compilers/flutter/patches/stable/disable-auto-update.patch b/pkgs/development/compilers/flutter/patches/disable-auto-update.patch
similarity index 100%
rename from pkgs/development/compilers/flutter/patches/stable/disable-auto-update.patch
rename to pkgs/development/compilers/flutter/patches/disable-auto-update.patch
diff --git a/pkgs/development/compilers/flutter/patches/stable/move-cache.patch b/pkgs/development/compilers/flutter/patches/move-cache.patch
similarity index 100%
rename from pkgs/development/compilers/flutter/patches/stable/move-cache.patch
rename to pkgs/development/compilers/flutter/patches/move-cache.patch
diff --git a/pkgs/development/compilers/flutter/repository.nix b/pkgs/development/compilers/flutter/repository.nix
new file mode 100644
index 000000000000..0f8de0a912f1
--- /dev/null
+++ b/pkgs/development/compilers/flutter/repository.nix
@@ -0,0 +1,24 @@
+{ lib, stdenv, dart, fetchurl, src, pname, version, depsSha256 }:
+
+stdenv.mkDerivation {
+  inherit src version;
+
+  pname = "${pname}-deps";
+  buildInputs = [ dart ];
+
+  buildPhase = ''
+    export PUB_CACHE="$out"
+    export FLUTTER_ROOT="$(pwd)"
+    export FLUTTER_TOOLS_DIR="$FLUTTER_ROOT/packages/flutter_tools"
+
+    pushd "$FLUTTER_TOOLS_DIR"
+    ${dart}/bin/pub get
+  '';
+
+  dontInstall = true;
+  dontFixup = true;
+
+  outputHashAlgo = "sha256";
+  outputHashMode = "recursive";
+  outputHash = depsSha256;
+}
diff --git a/pkgs/development/interpreters/dart/default.nix b/pkgs/development/interpreters/dart/default.nix
index 7fa59a18c5f1..5fb180201b96 100644
--- a/pkgs/development/interpreters/dart/default.nix
+++ b/pkgs/development/interpreters/dart/default.nix
@@ -1,89 +1,42 @@
-{ lib, stdenv, fetchurl, unzip, version ? "2.7.2" }:
-
-let
-
-  sources = let
-
+{ stdenv
+, lib
+, fetchurl
+, unzip
+, version ? "2.10.5"
+, sources ?
+  let
     base = "https://storage.googleapis.com/dart-archive/channels";
-    stable_version = "stable";
-    dev_version = "dev";
     x86_64 = "x64";
     i686 = "ia32";
     aarch64 = "arm64";
+    # Make sure that if the user overrides version parameter they're
+    # also need to override sources, to avoid mistakes
+    version = "2.10.5";
+  in
+  {
+    "${version}-x86_64-darwin" = fetchurl {
+      url = "${base}/stable/release/${version}/sdk/dartsdk-macos-${x86_64}-release.zip";
+      sha256 = "1vb2m25w6v901id9syan9q69fa60sxxd7qpyzq21fn5dpah0g99i";
+    };
+    "${version}-x86_64-linux" = fetchurl {
+      url = "${base}/stable/release/${version}/sdk/dartsdk-linux-${x86_64}-release.zip";
+      sha256 = "1mb6m3vxjya1dz47mdna23c2015n3bz8dvz8fwggq6k3zp0a4dsh";
+    };
+    "${version}-i686-linux" = fetchurl {
+      url = "${base}/stable/release/${version}/sdk/dartsdk-linux-${i686}-release.zip";
+      sha256 = "10g4qrwvmabrdg4i8y0wq9g7whqcpkdfp05yilflg70ybplrscf7";
+    };
+    "${version}-aarch64-linux" = fetchurl {
+      url = "${base}/stable/release/${version}/sdk/dartsdk-linux-${aarch64}-release.zip";
+      sha256 = "0js83wy496swcwia144fhxk872irb5nr6i8558hxabkdrpv1bky5";
+    };
+  }
+}:
 
-  in {
-    "1.24.3-x86_64-darwin" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-macos-${x86_64}-release.zip";
-      sha256 = "1n4cq4jrms4j0yl54b3w14agcgy8dbipv5788jziwk8q06a8c69l";
-    };
-    "1.24.3-x86_64-linux" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-linux-${x86_64}-release.zip";
-      sha256 = "16sm02wbkj328ni0z1z4n4msi12lb8ijxzmbbfamvg766mycj8z3";
-    };
-    "1.24.3-i686-linux" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-linux-${i686}-release.zip";
-      sha256 = "0a559mfpb0zfd49zdcpld95h2g1lmcjwwsqf69hd9rw6j67qyyyn";
-    };
-    "1.24.3-aarch64-linux" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-linux-${aarch64}-release.zip";
-      sha256 = "1p5bn04gr91chcszgmw5ng8mlzgwsrdr2v7k7ppwr1slkx97fsrh";
-    };
-    "2.7.2-x86_64-darwin" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-macos-${x86_64}-release.zip";
-      sha256 = "111zl075qdk2zd4d4mmfkn30jmzsri9nq3nspnmc2l245gdq34jj";
-    };
-    "2.7.2-x86_64-linux" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-linux-${x86_64}-release.zip";
-      sha256 = "0vvsgda1smqdjn35yiq9pxx8f5haxb4hqnspcsfs6sn5c36k854v";
-    };
-    "2.7.2-i686-linux" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-linux-${i686}-release.zip";
-      sha256 = "0dj01d2wwrp3cc5x73vs6fzhs6db60gkbjlrw3w9j04wcx69i38m";
-    };
-    "2.7.2-aarch64-linux" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-linux-${aarch64}-release.zip";
-      sha256 = "1p66fkdh1kv0ypmadmg67c3y3li3aaf1lahqh2g6r6qrzbh5da2p";
-    };
-    "2.10.0-x86_64-darwin" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-macos-${x86_64}-release.zip";
-      sha256 = "1n4qgsax5wi7krgvvs0dy7fz39nlykiw8gr0gdacc85hgyhqg09j";
-    };
-    "2.10.0-x86_64-linux" = fetchurl {
-      url = "${base}/${stable_version}/release/${version}/sdk/dartsdk-linux-${x86_64}-release.zip";
-      sha256 = "0dncmsfbwcn3ygflhp83i6z4bvc02fbpaq1vzdzw8xdk3sbynchb";
-    };
-    "2.9.0-4.0.dev-x86_64-darwin" = fetchurl {
-      url = "${base}/${dev_version}/release/${version}/sdk/dartsdk-macos-${x86_64}-release.zip";
-      sha256 = "0gj91pbvqrxsvxaj742cllqha2z65867gggzq9hq5139vkkpfj9s";
-    };
-    "2.9.0-4.0.dev-x86_64-linux" = fetchurl {
-      url = "${base}/${dev_version}/release/${version}/sdk/dartsdk-linux-${x86_64}-release.zip";
-      sha256 = "16d9842fb3qbc0hy0zmimav9zndfkq96glgykj20xssc88qpjk2r";
-    };
-    "2.9.0-4.0.dev-i686-linux" = fetchurl {
-      url = "${base}/${dev_version}/release/${version}/sdk/dartsdk-linux-${i686}-release.zip";
-      sha256 = "105wgyxmi491c7qw0z3zhn4lv52h80ngyz4ch9dyj0sq8nndz2rc";
-    };
-    "2.9.0-4.0.dev-aarch64-linux" = fetchurl {
-      url = "${base}/${dev_version}/release/${version}/sdk/dartsdk-linux-${aarch64}-release.zip";
-      sha256 = "1x6mlmc4hccmx42k7srhma18faxpxvghjwqahna80508rdpljwgc";
-    };
-    "2.11.0-161.0.dev-x86_64-darwin" = fetchurl {
-      url = "${base}/${dev_version}/release/${version}/sdk/dartsdk-macos-${x86_64}-release.zip";
-      sha256 = "0mlwxp7jkkjafxkc4vqlgwl62y0hk1arhfrvc9hpm9dv98g3bdjj";
-    };
-    "2.11.0-161.0.dev-x86_64-linux" = fetchurl {
-      url = "${base}/${dev_version}/release/${version}/sdk/dartsdk-linux-${x86_64}-release.zip";
-      sha256 = "05difz4w2fyh2yq5p5pkrqk59jqljlxhc1i6lmy5kihh6z69r12i";
-    };
-  };
-
-in
-
-with lib;
+assert version != null && version != "";
+assert sources != null && (builtins.isAttrs sources);
 
 stdenv.mkDerivation {
-
   pname = "dart";
   inherit version;
 
@@ -100,13 +53,13 @@ stdenv.mkDerivation {
     find $out/bin -executable -type f -exec patchelf --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) {} \;
   '';
 
-  libPath = makeLibraryPath [ stdenv.cc.cc ];
+  libPath = lib.makeLibraryPath [ stdenv.cc.cc ];
 
   dontStrip = true;
 
-  meta = {
+  meta = with lib; {
     homepage = "https://www.dartlang.org/";
-    maintainers = with maintainers; [ grburst ];
+    maintainers = with maintainers; [ grburst thiagokokada ];
     description = "Scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps";
     longDescription = ''
       Dart is a class-based, single inheritance, object-oriented language
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 21ef7acf4b0b..95a063331b27 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -117,6 +117,9 @@ mapAliases ({
   cv = progress; # added 2015-09-06
   d1x_rebirth = dxx-rebirth; # added 2018-04-25
   d2x_rebirth = dxx-rebirth; # added 2018-04-25
+  dart_dev = throw "Non-stable versions of Dart have been removed."; # added 2020-01-15
+  dart_old = throw "Non-stable versions of Dart have been removed."; # added 2020-01-15
+  dart_stable = dart; # added 2020-01-15
   dat = nodePackages.dat;
   dbvisualizer = throw "dbvisualizer has been removed from nixpkgs, as it's unmaintained"; # added 2020-09-20
   dbus_daemon = dbus.daemon; # added 2018-04-25
@@ -174,6 +177,8 @@ mapAliases ({
   fish-foreign-env = throw "fish-foreign-env has been replaced with fishPlugins.foreign-env"; # added 2020-12-29, modified 2021-01-10
   flameGraph = flamegraph; # added 2018-04-25
   flink_1_5 = throw "flink_1_5 was removed, use flink instead"; # added 2021-01-25
+  flutter-beta = throw "Non-stable versions of Flutter have been removed. You can use flutterPackages.mkFlutter to generate a package for other Flutter versions."; # added 2020-01-15
+  flutter-dev = throw "Non-stable versions of Flutter have been removed. You can use flutterPackages.mkFlutter to generate a package for other Flutter versions."; # added 2020-01-15
   flvtool2 = throw "flvtool2 has been removed."; # added 2020-11-03
   foldingathome = fahclient; # added 2020-09-03
   font-awesome-ttf = font-awesome; # 2018-02-25
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5342899c6a54..9ef2105feea5 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9596,8 +9596,6 @@ in
   flutterPackages =
     recurseIntoAttrs (callPackage ../development/compilers/flutter { });
   flutter = flutterPackages.stable;
-  flutter-beta = flutterPackages.beta;
-  flutter-dev = flutterPackages.dev;
 
   fpc = callPackage ../development/compilers/fpc { };
 
@@ -29489,9 +29487,6 @@ in
   spdlog = spdlog_1;
 
   dart = callPackage ../development/interpreters/dart { };
-  dart_old = dart.override    { version = "1.24.3"; };
-  dart_stable = dart.override { version = "2.7.2"; };
-  dart_dev = dart.override    { version = "2.9.0-4.0.dev"; };
 
   httrack = callPackage ../tools/backup/httrack { };