Updates for new double-underscore config settings

Author: semohr

.github/workflows/arviz_compat.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     env:
       TEST_SUBSET: ${{ matrix.test-subset }}
-      THEANO_FLAGS: floatX=${{ matrix.floatx }},gcc.cxxflags='-march=native'
+      THEANO_FLAGS: floatX=${{ matrix.floatx }},gcc__cxxflags='-march=native'
     defaults:
       run:
         shell: bash -l {0}

.github/workflows/pytest.yml

@@ -59,7 +59,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     env:
       TEST_SUBSET: ${{ matrix.test-subset }}
-      THEANO_FLAGS: floatX=${{ matrix.floatx }},gcc.cxxflags='-march=native'
+      THEANO_FLAGS: floatX=${{ matrix.floatx }},gcc__cxxflags='-march=native'
     defaults:
       run:
         shell: bash -l {0}

.github/workflows/windows.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     env:
       TEST_SUBSET: ${{ matrix.test-subset }}
-      THEANO_FLAGS: floatX=${{ matrix.floatx }},gcc.cxxflags='-march=core2'
+      THEANO_FLAGS: floatX=${{ matrix.floatx }},gcc__cxxflags='-march=core2'
     defaults:
       run:
         shell: bash -l {0}

pymc3/__init__.py

@@ -32,8 +32,8 @@ def __set_compiler_flags():
     # Workarounds for Theano compiler problems on various platforms
     import theano
 
-    current = theano.config.gcc.cxxflags
-    theano.config.gcc.cxxflags = f"{current} -Wno-c++11-narrowing"
+    current = theano.config.gcc__cxxflags
+    theano.config.gcc__cxxflags = f"{current} -Wno-c++11-narrowing"
 
 
 __set_compiler_flags()

scripts/test.sh

@@ -3,4 +3,4 @@
 set -e
 
 _FLOATX=${FLOATX:=float64}
-THEANO_FLAGS="floatX=${_FLOATX},gcc.cxxflags='-march=core2'" pytest -v --cov=pymc3 --cov-report=xml "$@" --cov-report term
+THEANO_FLAGS="floatX=${_FLOATX},gcc__cxxflags='-march=core2'" pytest -v --cov=pymc3 --cov-report=xml "$@" --cov-report term