dart: add update script

3 files changed, 132 insertions, 53 deletions

diff --git a/pkgs/development/compilers/dart/default.nix b/pkgs/development/compilers/dart/default.nix
index 461e359d3711..b0893562c2dd 100644
--- a/pkgs/development/compilers/dart/default.nix
+++ b/pkgs/development/compilers/dart/default.nix
@@ -4,43 +4,11 @@
 , unzip
 , runCommand
 , darwin
-# we need a way to build other dart versions
-# than the latest, because flutter might want
-# another version
-, version ? "2.19.3"
-, sources ? let
-    base = "https://storage.googleapis.com/dart-archive/channels";
-    x86_64 = "x64";
-    i686 = "ia32";
-    aarch64 = "arm64";
-in
-  {
-    "${version}-aarch64-darwin" = fetchurl {
-      url = "${base}/stable/release/${version}/sdk/dartsdk-macos-${aarch64}-release.zip";
-      sha256 = "sha256-wfUh6rXy8jAC0TVQJzXh4SrV2DQs9SvY8PGtNgZx+cA=";
-    };
-    "${version}-x86_64-darwin" = fetchurl {
-      url = "${base}/stable/release/${version}/sdk/dartsdk-macos-${x86_64}-release.zip";
-      sha256 = "sha256-zyu6r8akId/AHpBKH95wJXXu1LD9CKShWYKfppnSRx4=";
-    };
-    "${version}-x86_64-linux" = fetchurl {
-      url = "${base}/stable/release/${version}/sdk/dartsdk-linux-${x86_64}-release.zip";
-      sha256 = "sha256-45HE7Y9iO5dI+JfLWF1ikFfBFB+er46bK+EYkyuhFjI=";
-    };
-    "${version}-i686-linux" = fetchurl {
-      url = "${base}/stable/release/${version}/sdk/dartsdk-linux-${i686}-release.zip";
-      sha256 = "sha256-IkSJWfAocT1l8F2igAkR+Y5PNYD5PZ0j21D8aJk9JCY=";
-    };
-    "${version}-aarch64-linux" = fetchurl {
-      url = "${base}/stable/release/${version}/sdk/dartsdk-linux-${aarch64}-release.zip";
-      sha256 = "sha256-Bt18brbJA/XfiyP5o197HDXMuGm+a1AZx92Thoriv78=";
-    };
-  }
+, sources ? import ./sources.nix {inherit fetchurl;}
+, version ? sources.versionUsed
 }:
 
-assert version != null && version != "";
 assert sources != null && (builtins.isAttrs sources);
-
 stdenv.mkDerivation (finalAttrs: {
   pname = "dart";
   inherit version;
@@ -59,29 +27,33 @@ stdenv.mkDerivation (finalAttrs: {
 
   libPath = lib.makeLibraryPath [ stdenv.cc.cc ];
   dontStrip = true;
-  passthru.tests = {
-    testCreate = runCommand "dart-test-create" { nativeBuildInputs = [ finalAttrs.finalPackage ]; } ''
-      PROJECTNAME="dart_test_project"
-      dart create --no-pub $PROJECTNAME
+  passthru = {
+    updateScript = ./update.sh;
+    tests = {
+      testCreate = runCommand "dart-test-create" { nativeBuildInputs = [ finalAttrs.finalPackage ]; } ''
+        PROJECTNAME="dart_test_project"
+        dart create --no-pub $PROJECTNAME
 
-      [[ -d $PROJECTNAME ]]
-      [[ -f $PROJECTNAME/bin/$PROJECTNAME.dart ]]
-      touch $out
-    '';
+        [[ -d $PROJECTNAME ]]
+        [[ -f $PROJECTNAME/bin/$PROJECTNAME.dart ]]
+        touch $out
+      '';
 
-    testCompile = runCommand "dart-test-compile" {
-      nativeBuildInputs = [ finalAttrs.finalPackage ]
-        ++ lib.optionals stdenv.isDarwin [ darwin.cctools darwin.sigtool ];
-    } ''
-      HELLO_MESSAGE="Hello, world!"
-      echo "void main() => print('$HELLO_MESSAGE');" > hello.dart
-      dart compile exe hello.dart
-      PROGRAM_OUT=$(./hello.exe)
+      testCompile = runCommand "dart-test-compile" {
+        nativeBuildInputs = [ finalAttrs.finalPackage ]
+          ++ lib.optionals stdenv.isDarwin [ darwin.cctools darwin.sigtool ];
+      } ''
+        HELLO_MESSAGE="Hello, world!"
+        echo "void main() => print('$HELLO_MESSAGE');" > hello.dart
+        dart compile exe hello.dart
+        PROGRAM_OUT=$(./hello.exe)
 
-      [[ "$PROGRAM_OUT" == "$HELLO_MESSAGE" ]]
-      touch $out
-    '';
+        [[ "$PROGRAM_OUT" == "$HELLO_MESSAGE" ]]
+        touch $out
+      '';
+    };
   };
+
   meta = with lib; {
     homepage = "https://www.dartlang.org/";
     maintainers = with maintainers; [ grburst ];
diff --git a/pkgs/development/compilers/dart/sources.nix b/pkgs/development/compilers/dart/sources.nix
new file mode 100644
index 000000000000..13aaac2bb327
--- /dev/null
+++ b/pkgs/development/compilers/dart/sources.nix
@@ -0,0 +1,27 @@
+# This file was generated by ./update.sh.
+# If you do not find a line of three #-s at the end, it is broken and should not be used.
+let version = "2.19.3"; in
+{  fetchurl }: {
+  versionUsed = version;
+  "${version}-x86_64-darwin" = fetchurl {
+    url = "https://storage.googleapis.com/dart-archive/channels/stable/release/${version}/sdk/dartsdk-macos-x64-release.zip";
+    sha256 = "193hf56j7bws8bzqxxzz2sgbn2d80g5s8vp8ihi22cm3mmppfi4v";
+  };
+  "${version}-aarch64-darwin" = fetchurl {
+    url = "https://storage.googleapis.com/dart-archive/channels/stable/release/${version}/sdk/dartsdk-macos-arm64-release.zip";
+    sha256 = "0b30l8kfcsl1j6w2vbq08p0v4h4gca013l5fpznjqq0midxhybnw";
+  };
+  "${version}-aarch64-linux" = fetchurl {
+    url = "https://storage.googleapis.com/dart-archive/channels/stable/release/${version}/sdk/dartsdk-linux-arm64-release.zip";
+    sha256 = "0qyi7ppsf4rmzx1qgx3qbn4k7bgbncxjql6a9f2b1aj6l6lllvmg";
+  };
+  "${version}-x86_64-linux" = fetchurl {
+    url = "https://storage.googleapis.com/dart-archive/channels/stable/release/${version}/sdk/dartsdk-linux-x64-release.zip";
+    sha256 = "0iq7mdwpsnykk3j2bsgmazg30m4qg7i2lpv1ygbhy2lbhrkdpdck";
+  };
+  "${version}-i686-linux" = fetchurl {
+    url = "https://storage.googleapis.com/dart-archive/channels/stable/release/${version}/sdk/dartsdk-linux-ia32-release.zip";
+    sha256 = "0xksis14ff6bzjvycgxgldg96n88rh42adjyrrhcay2s183vh480";
+  };
+}
+###
diff --git a/pkgs/development/compilers/dart/update.sh b/pkgs/development/compilers/dart/update.sh
new file mode 100755
index 000000000000..c148f09b52a2
--- /dev/null
+++ b/pkgs/development/compilers/dart/update.sh
@@ -0,0 +1,80 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl jq
+
+set -euo pipefail
+
+# so if the script fails, debug logs are on stdenv
+log() {
+  >&2 echo "DART_UPDATER: $@"
+}
+
+# fetch the latest version number from upstream
+NEW_VER_DETAILS=$(curl -sL https://storage.googleapis.com/dart-archive/channels/stable/release/latest/VERSION)
+NEW_VER=$(jq -r '.version' <<< "$NEW_VER_DETAILS")
+
+MY_PATH=$(dirname $(realpath "$0"))
+SRC_FILE="$MY_PATH/sources.nix"
+log "file to write is $SRC_FILE"
+
+PRELUDE="# This file was generated by ./update.sh.
+# If you do not find a line of three #-s at the end, it is broken and should not be used.
+let version = \"$NEW_VER\"; in
+{ fetchurl }: {
+  versionUsed = version;"
+echo "$PRELUDE" > "$SRC_FILE"
+log "wrote prelude"
+
+# Fetches the source, then  writes the fetcher and hash into the sources file.
+# Arguments:
+#   - $1: VARIABLE NAME of (table of nix platform -> dart platform mappings) ("DARWIN_PLATFORMS"|"LIN_PLATFORMS")
+#   - $2: Dart-OS ("macos"|"linux")
+write_for_platform() {
+  BASE_OF_ALL_URLS='https://storage.googleapis.com/dart-archive/channels/stable/release'
+  BASE_URL_WRITTEN="$BASE_OF_ALL_URLS/\${version}/sdk"
+  BASE_URL_FETCHED="$BASE_OF_ALL_URLS/$NEW_VER/sdk"
+
+  TABLE_NAME=$1
+  declare -n TABLE=$TABLE_NAME
+
+  for platform in "${!TABLE[@]}"; do
+    DART_PLATFORM="${TABLE[$platform]}"
+    log "trying for dartplatform $DART_PLATFORM (platform $platform) (OS $2)"
+
+    URL_POSTFIX="dartsdk-$2-$DART_PLATFORM-release.zip"
+    URL="$BASE_URL_FETCHED/$URL_POSTFIX"
+    log "URL for $DART_PLATFORM: $URL"
+
+    HASH=$(nix-prefetch-url "$URL" --type sha256)
+    log "hash for platform $platform: $HASH"
+
+    FETCHER="  \"\${version}-$platform\" = fetchurl {
+    url = \"$BASE_URL_WRITTEN/$URL_POSTFIX\";
+    sha256 = \"$HASH\";
+  };"
+
+    echo "$FETCHER" >> $SRC_FILE
+  done
+  log "finished for $1
+---"
+
+}
+
+# Map nix platforms -> Dart platforms
+X8664="x64"
+AARCH64="arm64"
+I686="ia32"
+declare -A DARWIN_PLATFORMS=(["aarch64-darwin"]="$AARCH64"
+        ["x86_64-darwin"]="$X8664")
+
+declare -A LIN_PLATFORMS=( ["x86_64-linux"]="$X8664"
+        ["i686-linux"]="$I686"
+        ["aarch64-linux"]="$AARCH64")
+
+write_for_platform "DARWIN_PLATFORMS" "macos"
+write_for_platform "LIN_PLATFORMS" "linux"
+
+echo '}
+###' >> $SRC_FILE
+
+log "Replacing version in dart/default.nix"
+sed -i "s/$UPDATE_NIX_OLD_VERSION/$NEW_VER/g" "$MY_PATH/default.nix"