Split down condition into 2 lines in base.txt
maybe this might fix  the issue with PyUP not processing the file?
@@ -2,7 +2,11 @@ pytz==2020.1 # https://github.com/stub42/pytz
python-slugify==4.0.0 # https://github.com/un33k/python-slugify
Pillow==7.1.2 # https://github.com/python-pillow/Pillow
{%- if cookiecutter.use_compressor == "y" %}
-rcssmin==1.0.6{% if cookiecutter.windows == 'y' and cookiecutter.use_docker == 'n' %} --install-option="--without-c-extensions"{% endif %} # https://github.com/ndparker/rcssmin
+{%- if cookiecutter.windows == 'y' and cookiecutter.use_docker == 'n' %}
+rcssmin==1.0.6 --install-option="--without-c-extensions" # https://github.com/ndparker/rcssmin
+{%- else %}
+rcssmin==1.0.6 # https://github.com/ndparker/rcssmin
+{%- endif %}
{%- endif %}
argon2-cffi==20.1.0 # https://github.com/hynek/argon2_cffi
{%- if cookiecutter.use_whitenoise == 'y' %}
