dart: remove all versions except the one used by flutterPackages.stable

For those that need other versions of Dart, they can use the new
sources parameter instead.

pkgs/development/interpreters/dart/default.nix

@@ -1,89 +1,28 @@
-{ lib, stdenv, fetchurl, unzip, version ? "2.10.0" }:
-
-let
-
-  sources = let
-
+{ stdenv
+, lib
+, fetchurl
+, unzip
+, version ? "2.10.0"
+, sources ?
+  let
     base = "https://storage.googleapis.com/dart-archive/channels";
-    stable_version = "stable";
-    dev_version = "dev";
     x86_64 = "x64";
     i686 = "ia32";
     aarch64 = "arm64";
-
-  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";
+  in
+  {
+    "${version}-x86_64-darwin" = fetchurl {
+      url = "${base}/stable/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";
+    "${version}-x86_64-linux" = fetchurl {
+      url = "${base}/stable/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;
+  }
+}:
 
 stdenv.mkDerivation {
-
   pname = "dart";
   inherit version;
 
@@ -100,11 +39,11 @@ 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 ];
     description = "Scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps";

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

pkgs/top-level/all-packages.nix

@@ -29488,9 +29488,6 @@ 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 { };