diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d0d32495..29527e4e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -81,12 +81,12 @@ jobs:
           then
               rm -r build
           fi
-          meson setup build -Db_sanitize=address,undefined
+          meson setup build
           python -m build --no-isolation --wheel -Cbuilddir=build --config-setting='compile-args=-v' -Csetup-args="-Dbuildtype=debug"
           find ./dist/*.whl | xargs python -m pip install
       - name: Run stringdtype tests
         working-directory: stringdtype
         run: |
-          ASAN_OPTIONS=detect_leaks=false LD_PRELOAD=/usr/lib/gcc/x86_64-linux-gnu/11/libasan.so pytest -s -vvv --color=yes
+          pytest -s -vvv --color=yes
           pip uninstall -y pandas
-          ASAN_OPTIONS=detect_leaks=false LD_PRELOAD=/usr/lib/gcc/x86_64-linux-gnu/11/libasan.so pytest -s -vvv --color=yes
+          pytest -s -vvv --color=yes
diff --git a/quaddtype/README.md b/quaddtype/README.md
index 60693cb9..bd067384 100644
--- a/quaddtype/README.md
+++ b/quaddtype/README.md
@@ -20,3 +20,39 @@ np.array([1,2,3], dtype=QuadPrecDType("sleef"))
 # using longdouble backend
 np.array([1,2,3], dtype=QuadPrecDType("longdouble"))
 ```
+
+## Install from source
+
+The code needs the quad precision pieces of the sleef library, which
+is not available on most systems by default, so we have to generate
+that first.  The below assumes one has the required pieces to build
+sleef (cmake and libmpfr-dev), and that one is in the package
+directory locally.
+
+```
+git clone https://github.com/shibatch/sleef.git
+cd sleef
+cmake -S . -B build -DSLEEF_BUILD_QUAD:BOOL=ON -DSLEEF_BUILD_SHARED_LIBS:BOOL=ON -DCMAKE_POSITION_INDEPENDENT_CODE=ON
+cmake --build build/ --clean-first -j
+cd ..
+```
+
+In principle, one can now install this system-wide, but easier would
+seem to use the version that was just created, as follows:
+```
+export SLEEF_DIR=$PWD/sleef/build
+export LIBRARY_PATH=$SLEEF_DIR/lib
+export C_INCLUDE_PATH=$SLEEF_DIR/include
+export CPLUS_INCLUDE_PATH=$SLEEF_DIR/include
+python3 -m venv temp
+source temp/bin/activate
+pip install meson-python numpy pytest
+pip install -e . -v --no-build-isolation
+export LD_LIBRARY_PATH=$SLEEF_DIR/lib
+```
+
+Here, we created an editable install on purpose, so one can just work
+from the package directory if needed, e.g., to run the tests with,
+```
+python -m pytest
+```
diff --git a/quaddtype/tests/test_quaddtype.py b/quaddtype/tests/test_quaddtype.py
index 11cf7671..38d32fb1 100644
--- a/quaddtype/tests/test_quaddtype.py
+++ b/quaddtype/tests/test_quaddtype.py
@@ -72,8 +72,10 @@ def test_unary_ops(op, val, expected):
 
 
 def test_nan_and_inf():
-    assert (QuadPrecision("nan") != QuadPrecision("nan")) == (
-        QuadPrecision("nan") == QuadPrecision("nan"))
+    # NaN should not equal itself
+    assert QuadPrecision("nan") != QuadPrecision("nan")
+
+    # Test infinity comparisons
     assert QuadPrecision("inf") > QuadPrecision("1e1000")
     assert QuadPrecision("-inf") < QuadPrecision("-1e1000")