diff --git a/.appveyor_generate_make.yml b/.appveyor_generate_make.yml
deleted file mode 100644
index cfd180e5..00000000
--- a/.appveyor_generate_make.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-#environment:
-#
-#  matrix:
-#    - PYTHON: "/c/Python35-x64"
-#    - PYTHON: "/c/Python36-x64"
-#    - PYTHON: "/c/Python37-x64"
-
-install:
-- git submodule update --init --recursive
-- cd flame-blis
-- set "CC=clang"
-- set "PATH=C:\msys64\mingw64\bin;C:\msys64\bin;%PATH%"
-- set "PATH=C:\Program Files\LLVM\bin;%PATH%"
-- set "AR=llvm-ar"
-- set "AS=llvm-as"
-- call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" amd64
-
-
-build_script:
-- set RANLIB=echo
-- set LIBPTHREAD=
-- set "PATH=%PATH%;C:\blis\lib"
-- set "CFLAGS=-Wno-macro-redefined"
-- cd %APPVEYOR_BUILD_FOLDER%
-- cd flame-blis
-- bash -lc "ln -s $APPVEYOR_BUILD_FOLDER /c/projects/cython-blis"
-- bash -lc "cd /c/projects/cython-blis/flame-blis && ./configure --disable-shared --disable-cblas --disable-blas --disable-threading --enable-verbose-make --enable-arg-max-hack --prefix=/c/blis x86_64"
-- bash -lc "cd /c/projects/cython-blis/flame-blis && mingw32-make -j4 > make.log"
-- bash -lc "mkdir -p /c/projects/cython-blis/blis/_src/include/windows-x86_64"
-- bash -lc "cd /c/projects/cython-blis && cat flame-blis/make.log | python bin/munge_make_log.py windows x86_64 > blis/_src/make/windows-x86_64.jsonl"
-- bash -lc "cp /c/projects/cython-blis/flame-blis/include/x86_64/blis.h /c/projects/cython-blis/blis/_src/include/windows-x86_64/blis.h"
-- bash -lc "cp /c/projects/cython-blis/blis/_src/make/windows-x86_64.jsonl $APPVEYOR_BUILD_FOLDER/blis/_src/make/windows-x86_64.jsonl"
-- bash -lc "mkdir -p $APPVEYOR_BUILD_FOLDER/blis/_src/include/windows-x86_64"
-- bash -lc "cp /c/projects/cython-blis/blis/_src/include/windows-x86_64/blis.h $APPVEYOR_BUILD_FOLDER/blis/_src/include/windows-x86_64/blis.h"
-#- python -m pip install -U pip wheel
-#- python -m pip install -r requirements.txt
-#- python setup.py bdist_wheel
-#- cd ..
-#- bash -lc "cp -r $APPVEYOR_BUILD_FOLDER /c/build"
-#- bash -lc "python -m pip install /c/build/dist/*.whl"
-
-#test_script:
-#- python -m pytest --pyargs blis
-
-artifacts:
-  - path: blis/_src/make
-    name: windows-x86_64.jsonl
-  - path: blis/_src/include/windows-x86_64
-    name: blis.h
diff --git a/README.md b/README.md
index c0c5184c..02bd2383 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ routines as a self-contained Python C-extension.
 
 Currently, we only supports single-threaded execution, as this is actually best for our workloads (ML inference).
 
-[![Appveyor](https://img.shields.io/appveyor/ci/explosion/cython-blis/master.svg?style=flat-square&logo=appveyor)](https://ci.appveyor.com/project/explosion/cython-blis)
+[![Azure Pipelines](https://img.shields.io/azure-devops/build/explosion-ai/public/6/master.svg?logo=azure-pipelines&style=flat-square)](https://dev.azure.com/explosion-ai/public/_build?definitionId=6)
 [![pypi Version](https://img.shields.io/pypi/v/blis.svg?style=flat-square)](https://pypi.python.org/pypi/blis)
 [![conda](https://img.shields.io/conda/vn/conda-forge/cython-blis.svg?style=flat-square)](https://anaconda.org/conda-forge/cython-blis)
 [![Python wheels](https://img.shields.io/badge/wheels-%E2%9C%93-4c1.svg?longCache=true&style=flat-square&logo=python&logoColor=white)](https://github.com/explosion/wheelwright/releases)
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 35578978..d646f587 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -5,43 +5,45 @@ trigger:
     - '*'
 
 jobs:
-
 - job: 'Test'
   strategy:
     matrix:
-      Python27Linux:
-        imageName: 'ubuntu-16.04'
-        python.version: '2.7'
-      Python27Mac:
-        imageName: 'macos-10.13'
-        python.version: '2.7'
       Python35Linux:
         imageName: 'ubuntu-16.04'
         python.version: '3.5'
       Python35Mac:
         imageName: 'macos-10.13'
         python.version: '3.5'
+      Python35Windows:
+        imageName: 'vs2017-win2016'
+        python.version: '3.5'
       Python36Linux:
         imageName: 'ubuntu-16.04'
         python.version: '3.6'
       Python36Mac:
         imageName: 'macos-10.13'
         python.version: '3.6'
+      Python36Windows:
+        imageName: 'vs2017-win2016'
+        python.version: '3.6'
       Python37Linux:
         imageName: 'ubuntu-16.04'
         python.version: '3.7'
       Python37Mac:
         imageName: 'macos-10.13'
         python.version: '3.7'
+      Python37Windows:
+        imageName: 'vs2017-win2016'
+        python.version: '3.7'
       Python38Linux:
         imageName: 'ubuntu-16.04'
         python.version: '3.8'
-      # Python38Windows:
-      #   imageName: 'vs2017-win2016'
-      #   python.version: '3.8'
       Python38Mac:
         imageName: 'macos-10.13'
         python.version: '3.8'
+      Python38Windows:
+        imageName: 'vs2017-win2016'
+        python.version: '3.8'
     maxParallel: 4
   pool:
     vmImage: $(imageName)
@@ -52,33 +54,47 @@ jobs:
       versionSpec: '$(python.version)'
       architecture: 'x64'
 
-  - script: |
-      source ./travis/before_install_linux.sh
-      before_install
-    condition: eq( variables['Agent.OS'], 'Linux')
-    displayName: 'Preinstall (Linux)'
+  - script: choco install llvm
+    condition: eq( variables['Agent.OS'], 'Windows_NT')
+    displayName: 'Preinstall (Windows)'
 
   - script: |
       python -m pip install --upgrade pip wheel
       pip install -r requirements.txt
     displayName: 'Install dependencies'
 
-  - script: python setup.py bdist_wheel
-    displayName: 'Build wheel'
-
+  # Set the correct paths and includes. Only the env variables set here are
+  # used, not the ones defined in the .jsonl.
   - script: |
-      choco install llvm
-      cd ..
-      bash -c "cp -r $(Agent.BuildDirectory) /c/build"
-      bash -lc "python -m pip install /c/build/dist/*.whl"
+      set "PATH=C:\Program Files\LLVM\bin;%PATH%"
+      set "INCLUDE=%$VC_INCLUDEPATH%"
+      clang --version
+      python setup.py bdist_wheel
     condition: eq( variables['Agent.OS'], 'Windows_NT')
-    displayName: 'Install wheel (Windows)'
+    displayName: 'Build wheel (Windows)'
 
-  - script: |
+  - script: python setup.py bdist_wheel
+    condition: or(eq(variables['Agent.OS'], 'Linux'), eq(variables['Agent.OS'], 'Darwin'))
+    displayName: 'Build wheel (Linux / Mac)'
+
+  - task: PythonScript@0
+    inputs:
+      scriptSource: inline
+      script: |
+        # https://github.com/pypa/pip/issues/6951
+        import os
+        wheel_file = os.listdir('./dist')[0]
+        wheel_path = os.path.join('./dist', wheel_file)
+        os.rename(wheel_path, wheel_path.replace("cp38m-win", "cp38-win"))
+        print(os.listdir('./dist'))
+      failOnStderr: true
+    condition: and(eq(variables['Agent.OS'], 'Windows_NT'), eq(variables['python.version'], '3.8'))
+    displayName: Fix wheel name (Windows, Python 3.8)
+
+  - bash: |
       rm -rf blis*
       python -m pip install dist/*.whl
-    condition: in( variables['Agent.OS'], 'Linux', 'Darwin')
-    displayName: 'Install wheel (Linux, Mac)'
+    displayName: 'Install wheel'
 
   - script: |
       python -m pytest --pyargs blis
diff --git a/.appveyor_compile_jsonl.yml b/bin/.appveyor_compile_jsonl.yml
similarity index 100%
rename from .appveyor_compile_jsonl.yml
rename to bin/.appveyor_compile_jsonl.yml
diff --git a/.appveyor_run_tests.yml b/bin/.appveyor_run_tests.yml
similarity index 100%
rename from .appveyor_run_tests.yml
rename to bin/.appveyor_run_tests.yml
diff --git a/.update_blis_travis.yml b/bin/.update_blis_travis.yml
similarity index 100%
rename from .update_blis_travis.yml
rename to bin/.update_blis_travis.yml
diff --git a/travis/before_install_linux.sh b/bin/travis/before_install_linux.sh
similarity index 100%
rename from travis/before_install_linux.sh
rename to bin/travis/before_install_linux.sh
diff --git a/travis/before_install_osx.sh b/bin/travis/before_install_osx.sh
similarity index 100%
rename from travis/before_install_osx.sh
rename to bin/travis/before_install_osx.sh
diff --git a/travis/common_utils.sh b/bin/travis/common_utils.sh
similarity index 100%
rename from travis/common_utils.sh
rename to bin/travis/common_utils.sh
diff --git a/blis/_src/make/windows-x86_64.jsonl b/blis/_src/make/windows-x86_64.jsonl
index 8420309a..2421dc62 100644
--- a/blis/_src/make/windows-x86_64.jsonl
+++ b/blis/_src/make/windows-x86_64.jsonl
@@ -1,4 +1,4 @@
-{"environment": {"APPVEYOR_REPO_COMMIT_AUTHOR": "Matthew Honnibal", "LIB": "C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\LIB\\amd64;C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\ATLMFC\\LIB\\amd64;C:\\Program Files (x86)\\Windows Kits\\10\\lib\\10.0.14393.0\\ucrt\\x64;C:\\Program Files (x86)\\Windows Kits\\NETFXSDK\\4.6.1\\lib\\um\\x64;C:\\Program Files (x86)\\Windows Kits\\10\\lib\\10.0.14393.0\\um\\x64;", "VS100COMNTOOLS": "c:\\Program Files (x86)\\Microsoft Visual Studio 10.0\\Common7\\Tools\\", "APPVEYOR_PROJECT_NAME": "cython-blis", "AVVM_DOWNLOAD_URL": "https://appveyordownloads.blob.core.windows.net/avvm", "GIT_LFS_PATH": "C:\\Program Files\\Git LFS", "MSYSTEM_CHOST": "x86_64-pc-msys", "APPVEYOR_REPO_COMMIT_AUTHOR_EMAIL": "honnibal+gh@gmail.com", "WINDOWSSDK_EXECUTABLEPATH_X64": "C:\\Program Files (x86)\\Microsoft SDKs\\Windows\\v10.0A\\bin\\NETFX 4.6.1 Tools\\x64\\", "SYSTEMROOT": "C:\\windows", "LASTEXITCODE": "0", "CHOCOLATEYLASTPATHUPDATE": "Sun Feb  3 19:40:40 2019", "INFOPATH": "C:\\Program Files\\Git\\usr\\local\\info;C:\\Program Files\\Git\\usr\\share\\info;C:\\Program Files\\Git\\usr\\info;C:\\Program Files\\Git\\share\\info", "SHELL": "C:\\Program Files\\Git\\usr\\bin\\bash.exe", "MSYSTEM_CARCH": "x86_64", "MSYS2_PATH_TYPE": "inherit", "MANPATH": "C:\\Program Files\\Git\\usr\\local\\man;C:\\Program Files\\Git\\usr\\share\\man;C:\\Program Files\\Git\\usr\\man;C:\\Program Files\\Git\\share\\man", "JAVA_HOME": "C:\\Progra~1\\Java\\jdk1.8.0", "CI_WINDOWS": "True", "APPVEYOR_BUILD_AGENT_HYPERV_NIC_CONFIGURED": "true", "WINDOWSLIBPATH": "C:\\Program Files (x86)\\Windows Kits\\10\\UnionMetadata;C:\\Program Files (x86)\\Windows Kits\\10\\References", "COMSPEC": "C:\\windows\\system32\\cmd.exe", "WINDIR": "C:\\windows", "RANLIB": "echo", "APPVEYOR_REPO_COMMIT": "8bbf4b332e237459bb8f45dc9414b3049a202939", "VS90COMNTOOLS": "C:\\Program Files (x86)\\Microsoft Visual Studio 9.0\\Common7\\Tools\\", "ENABLENUGETPACKAGERESTORE": "true", "SESSIONNAME": "Console", "CONFIG_SITE": "C:/Program Files/Git/etc/config.site", "HOMEDRIVE": "C:", "SYSTEMDRIVE": "C:", "HOSTNAME": "APPVYR-WIN", "APPVEYOR": "True", "FRAMEWORKVERSION64": "v4.0.30319", "PROCESSOR_LEVEL": "6", "OS": "Windows_NT", "FSHARPINSTALLDIR": "C:\\Program Files (x86)\\Microsoft SDKs\\F#\\4.0\\Framework\\v4.0\\", "WINDOWSSDK_EXECUTABLEPATH_X86": "C:\\Program Files (x86)\\Microsoft SDKs\\Windows\\v10.0A\\bin\\NETFX 4.6.1 Tools\\", "GOROOT": "C:\\go", "APPVEYOR_BUILD_WORKER_IMAGE": "Visual Studio 2015", "CI_LINUX": "False", "UCRTVERSION": "10.0.14393.0", "APPVEYOR_API_URL": "http://localhost:1033/", "TEMP": "C:\\Users\\appveyor\\AppData\\Local\\Temp\\1", "SHLVL": "1", "APPVEYOR_REPO_NAME": "explosion/cython-blis", "COMMONPROGRAMFILES(X86)": "C:\\Program Files (x86)\\Common Files", "APR_ICONV_PATH": "C:\\Program Files (x86)\\Subversion\\iconv", "HOMEPATH": "\\Users\\appveyor", "VISUALSTUDIOVERSION": "14.0", "M2_HOME": "C:\\Program Files (x86)\\Apache\\Maven", "WINDOWSSDKDIR": "C:\\Program Files (x86)\\Windows Kits\\10\\", "FRAMEWORKDIR64": "c:\\Windows\\Microsoft.NET\\Framework64", "LOGONSERVER": "\\\\APPVYR-WIN", "APPVEYOR_JOB_ID": "wp7dj9edlg7t43xq", "PKG_CONFIG_PATH": "C:\\Program Files\\Git\\usr\\lib\\pkgconfig;C:\\Program Files\\Git\\usr\\share\\pkgconfig;C:\\Program Files\\Git\\lib\\pkgconfig", "APPVEYOR_REPO_PROVIDER": "gitHub", "_": "C:/Python27/python", "APPVEYOR_URL": "https://ci.appveyor.com", "OPENSSL_CONF": "C:\\OpenSSL-Win32\\bin\\openssl.cfg", "APPDATA": "C:\\Users\\appveyor\\AppData\\Roaming", "APPVEYOR_REPO_BRANCH": "update-blis", "APPVEYOR_BUILD_ID": "23072639", "WIX": "C:\\Program Files (x86)\\WiX Toolset v3.11\\", "FRAMEWORKVERSION": "v4.0.30319", "TMP": "C:\\Users\\appveyor\\AppData\\Local\\Temp\\1", "COMPUTERNAME": "APPVYR-WIN", "VS110COMNTOOLS": "C:\\Program Files (x86)\\Microsoft Visual Studio 11.0\\Common7\\Tools\\", "WINDOWSSDKLIBVERSION": "10.0.14393.0\\", "USERDOMAIN": "APPVYR-WIN", "VSSDK120INSTALL": 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 {"target": "obj/x86_64/config/bulldozer/bli_cntx_init_bulldozer.o", "macros": ["-D_POSIX_C_SOURCE=200112L", "-DBLIS_VERSION_STRING=\"0.5.1\"", "-DBLIS_IS_BUILDING_LIBRARY"], "source": "config/bulldozer/bli_cntx_init_bulldozer.c", "flags": ["-O3", "-std=c99"], "include": ["-Iinclude/windows-x86_64", "-I./frame/3/", "-I./frame/ind/ukernels/", "-I./frame/1m/", "-I./frame/1f/", "-I./frame/1/", "-I./frame/include"], "compiler": "clang"}
 {"target": "obj/x86_64/config/excavator/bli_cntx_init_excavator.o", "macros": ["-D_POSIX_C_SOURCE=200112L", "-DBLIS_VERSION_STRING=\"0.5.1\"", "-DBLIS_IS_BUILDING_LIBRARY"], "source": "config/excavator/bli_cntx_init_excavator.c", "flags": ["-O3", "-std=c99"], "include": ["-Iinclude/windows-x86_64", "-I./frame/3/", "-I./frame/ind/ukernels/", "-I./frame/1m/", "-I./frame/1f/", "-I./frame/1/", "-I./frame/include"], "compiler": "clang"}
 {"target": "obj/x86_64/config/generic/bli_cntx_init_generic.o", "macros": ["-D_POSIX_C_SOURCE=200112L", "-DBLIS_VERSION_STRING=\"0.5.1\"", "-DBLIS_IS_BUILDING_LIBRARY"], "source": "config/generic/bli_cntx_init_generic.c", "flags": ["-O3", "-std=c99"], "include": ["-Iinclude/windows-x86_64", "-I./frame/3/", "-I./frame/ind/ukernels/", "-I./frame/1m/", "-I./frame/1f/", "-I./frame/1/", "-I./frame/include"], "compiler": "clang"}
diff --git a/setup.py b/setup.py
index 60f3f035..be4684bb 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 # but we need to tell OSX to build for 10.7.
 # Otherwise, wheels don't work. We can't use 10.6,
 # it doesn't compile.
-#if "MACOSX_DEPLOYMENT_TARGET" not in os.environ:
+# if "MACOSX_DEPLOYMENT_TARGET" not in os.environ:
 #    os.environ["MACOSX_DEPLOYMENT_TARGET"] = "10.7"
 
 import contextlib
@@ -197,8 +197,14 @@ def build_object(self, compiler, source, target, flags, macros, include, env=Non
         command.extend(flags)
         command.extend(macros)
         command.extend(include)
-        print(" ".join(command))
-        subprocess.check_call(command, cwd=BLIS_DIR)
+        print("[COMMAND]", " ".join(command))
+        try:
+            kwargs = {"cwd": BLIS_DIR, "check": True}
+            if sys.version_info[0] == 3 and sys.version_info[1] > 6:
+                kwargs["capture_output"] = True
+            subprocess.run(command, **kwargs)
+        except Exception as err:
+            raise ValueError(getattr(err, "stderr", err))
         return target