Move appveyor fast fail from jq to powershell

appveyor.yml

@@ -33,9 +33,13 @@ cache:
  - x86_64-4.9.2-release-win32-seh-rt_v4-rev3.7z
  - llvm-3.3-i686-w64-mingw32-juliadeps.7z
  - llvm-3.3-x86_64-w64-mingw32-juliadeps.7z
- - jq.exe
 
 build_script:
+# If there's a newer build queued for the same PR, cancel this one
+ - ps: if ($env:APPVEYOR_PULL_REQUEST_NUMBER -and $env:APPVEYOR_BUILD_NUMBER -ne ((Invoke-RestMethod `
+ https://ci.appveyor.com/api/projects/$env:APPVEYOR_ACCOUNT_NAME/$env:APPVEYOR_PROJECT_SLUG/history?recordsNumber=50).builds | `
+ Where-Object pullRequestId -eq $env:APPVEYOR_PULL_REQUEST_NUMBER)[0].buildNumber) { `
+ throw "There are newer queued builds for this pull request, failing early." }
 # Remove C:\MinGW\bin from the path, the version of MinGW installed on
 # AppVeyor is not compatible with the cross-compiled Julia Windows binaries
  - set PATH=%PATH:C:\MinGW\bin;=%

contrib/windows/msys_build.sh

@@ -25,21 +25,6 @@ checksum_download() {
  deps/jlchecksum "$f"
 }
 
-# Fail fast on AppVeyor if there are newer pending commits in this PR
-if [ -n "$APPVEYOR_PULL_REQUEST_NUMBER" ]; then
- # download a handy cli json parser
- if ! [ -e jq.exe ]; then
- $curlflags -O http:https://stedolan.github.io/jq/download/win64/jq.exe
- fi
- av_api_url="https://ci.appveyor.com/api/projects/StefanKarpinski/julia/history?recordsNumber=50"
- query=".builds | map(select(.pullRequestId == \"$APPVEYOR_PULL_REQUEST_NUMBER\"))[0].buildNumber"
- latestbuild="$(curl $av_api_url | ./jq "$query")"
- if [ -n "$latestbuild" -a "$latestbuild" != "null" -a "$latestbuild" != "$APPVEYOR_BUILD_NUMBER" ]; then
- echo "There are newer queued builds for this pull request, failing early."
- exit 1
- fi
-fi
-
 # If ARCH environment variable not set, choose based on uname -m
 if [ -z "$ARCH" -a -z "$XC_HOST" ]; then
  export ARCH=`uname -m`