diff --git a/cfr/visual.py b/cfr/visual.py
index 4fbab1f..ebbf8cb 100644
--- a/cfr/visual.py
+++ b/cfr/visual.py
@@ -17,7 +17,6 @@
 from scipy import stats
 from scipy.stats.mstats import mquantiles
 from scipy.stats import cumfreq, gaussian_kde
-from scipy.integrate import cumtrapz
 from matplotlib.lines import Line2D
 from matplotlib.patches import Patch
 from matplotlib.legend_handler import HandlerLine2D
@@ -1622,4 +1621,4 @@ def add_annotation(ax, fs=20, loc_x=0, loc_y=1.03, start=0, style=None):
             loc_x, loc_y, letter_str,
             transform=v.transAxes, 
             size=fs[i], weight='bold',
-        )
\ No newline at end of file
+        )
diff --git a/oryx-build-commands.txt b/oryx-build-commands.txt
new file mode 100644
index 0000000..d647bdf
--- /dev/null
+++ b/oryx-build-commands.txt
@@ -0,0 +1,2 @@
+PlatformWithVersion=Python 
+BuildCommands=conda env create --file environment.yml --prefix ./venv --quiet