Drop the default package mirror

.github/workflows/ci.yml

@@ -20,8 +20,3 @@ jobs:
       run: git clone --depth 1 --branch v1.10.0 https://github.com/bats-core/bats-core.git bats
     - name: Run tests
       run: PATH="./bats/bin:$PATH" script/test
-    - name: Verify download URL checksums
-      if: github.event_name == 'pull_request'
-      run: ./script/mirror verify "$COMMIT_RANGE"
-      env:
-        COMMIT_RANGE: ${{ github.event.pull_request.base.sha }}..

README.md

@@ -147,12 +147,15 @@ See the next section for more information on how to author checksums.
 
 #### Package Mirrors
 
-To speed up downloads, ruby-build fetches package files from a mirror hosted on
-Amazon CloudFront. To benefit from this, the packages must specify their checksum:
+You may specify a custom mirror by setting `RUBY_BUILD_MIRROR_URL`. When set,
+ruby-build will first attempt to download packages from the mirror before falling
+back to the original URL.
 
 ```sh
 # example:
+export RUBY_BUILD_MIRROR_URL="https://my-mirror.example.com"
 install_package "ruby-2.6.5" "https://ruby-lang.org/ruby-2.6.5.tgz#<SHA2>"
+# Will first try: https://my-mirror.example.com/<SHA2>
 ```
 
 ruby-build will first try to fetch this package from `$RUBY_BUILD_MIRROR_URL/<SHA2>`
@@ -164,15 +167,10 @@ will fall back to downloading the package from the original location if:
 - no tool is available to calculate the checksum; or
 - `RUBY_BUILD_SKIP_MIRROR` is enabled.
 
-You may specify a custom mirror by setting `RUBY_BUILD_MIRROR_URL`.
-
 If a mirror site doesn't conform to the above URL format, you can specify the
 complete URL by setting `RUBY_BUILD_MIRROR_PACKAGE_URL`. It behaves the same as
 `RUBY_BUILD_MIRROR_URL` except being a complete URL.
 
-The default ruby-build download mirror is sponsored by
-[Basecamp](https://basecamp.com/).
-
 #### Keeping the build directory after installation
 
 Both `ruby-build` and `rbenv install` accept the `-k` or `--keep` flag, which

bin/ruby-build

@@ -479,9 +479,7 @@ fetch_tarball() {
     package_url="${package_url%%#*}"
 
     if [ -n "$RUBY_BUILD_MIRROR_URL" ]; then
-      if [[ -z "$RUBY_BUILD_DEFAULT_MIRROR" || $package_url != */cache.ruby-lang.org/* ]]; then
-        mirror_url="${RUBY_BUILD_MIRROR_URL}/$checksum"
-      fi
+      mirror_url="${RUBY_BUILD_MIRROR_URL}/$checksum"
     elif [ -n "$RUBY_BUILD_MIRROR_PACKAGE_URL" ]; then
       mirror_url="$RUBY_BUILD_MIRROR_PACKAGE_URL"
     fi
@@ -1579,12 +1577,8 @@ else
   unset RUBY_BUILD_CACHE_PATH
 fi
 
-if [ -z "$RUBY_BUILD_MIRROR_URL" ] && [ -z "$RUBY_BUILD_MIRROR_PACKAGE_URL" ]; then
-  RUBY_BUILD_MIRROR_URL="https://dqw8nmjcqpjn7.cloudfront.net"
-  RUBY_BUILD_DEFAULT_MIRROR=1
-else
+if [ -n "$RUBY_BUILD_MIRROR_URL" ]; then
   RUBY_BUILD_MIRROR_URL="${RUBY_BUILD_MIRROR_URL%/}"
-  RUBY_BUILD_DEFAULT_MIRROR=
 fi
 
 if [ -n "$RUBY_BUILD_SKIP_MIRROR" ] || ! has_checksum_support compute_sha2; then

test/cache.bats

@@ -50,13 +50,13 @@ export RUBY_BUILD_CACHE_PATH="$TMP/cache"
 }
 
 
-@test "cached package with invalid checksum falls back to mirror and updates cache" {
+@test "cached package with invalid checksum falls back to original URL and updates cache" {
   export RUBY_BUILD_SKIP_MIRROR=
+  export RUBY_BUILD_MIRROR_URL=
   local checksum="ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
 
   stub shasum true "echo invalid" "echo $checksum"
-  stub curl "-*I* : true" \
-    "-q -fL -o * https://?*/$checksum : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$4"
+  stub curl "-q -fL -o * http://example.com/* : cp $FIXTURE_ROOT/\${5##*/} \$4"
 
   mkdir -p "$RUBY_BUILD_CACHE_PATH"
   touch "${RUBY_BUILD_CACHE_PATH}/package-1.0.0.tar.gz"

test/mirror.bats

@@ -89,13 +89,12 @@ export RUBY_BUILD_MIRROR_URL=http://mirror.example.com
 }
 
 
-@test "default mirror URL" {
+@test "no default mirror URL" {
   export RUBY_BUILD_MIRROR_URL=
   local checksum="ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
 
   stub shasum true "echo $checksum"
-  stub curl "-*I* : true" \
-    "-q -fL -o * https://?*/$checksum : cp $FIXTURE_ROOT/package-1.0.0.tar.gz \$4" \
+  stub curl "-q -fL -o * http://example.com/* : cp $FIXTURE_ROOT/\${5##*/} \$4"
 
   install_fixture definitions/with-checksum
 
@@ -107,24 +106,6 @@ export RUBY_BUILD_MIRROR_URL=http://mirror.example.com
 }
 
 
-@test "package URL with ruby-lang CDN with default mirror URL will bypasses mirror" {
-  export RUBY_BUILD_MIRROR_URL=
-  local checksum="ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5"
-
-  stub shasum true "echo $checksum"
-  stub curl "-q -fL -o * https://cache.ruby-lang.org/* : cp $FIXTURE_ROOT/\${5##*/} \$4"
-
-  run_inline_definition <<DEF
-install_package "package-1.0.0" "https://cache.ruby-lang.org/packages/package-1.0.0.tar.gz#ba988b1bb4250dee0b9dd3d4d722f9c64b2bacfc805d1b6eba7426bda72dd3c5" copy
-DEF
-
-  assert_success
-  assert [ -x "${INSTALL_ROOT}/bin/package" ]
-
-  unstub curl
-  unstub shasum
-}
-
 
 @test "package is fetched from complete mirror URL" {
   export RUBY_BUILD_MIRROR_URL=