chore: update appveyor.yaml

appveyor.yml

@@ -9,15 +9,14 @@ environment:
   VCVARS: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat
   VCVARSARG: x64
 
-install:
+build: false
+
+before_test:
   - appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
   - rustup-init -yv --default-toolchain nightly --default-host x86_64-pc-windows-msvc
-  - pip install tox
-
-
-before_build:
   - if defined VCVARS call "%VCVARS%" %VCVARSARG%
   - C:\Miniconda3\Library\bin\conda.bat activate
+  - pip install tox
 
-build_script:
+test_script:
   - tox -e build

tox.ini

@@ -2,7 +2,7 @@
 envlist = py37
 requires = tox-conda
 
-[testenv]
+[testenv:conda]
 description = Build ED_LRR
 recreate = True
 skip_install = True