add_pipe not working with "en_core_web_sm"

[arditobryan]

Hi, I have tried to use my own lemmatizer on en_core_web_sm:

nlp = spacy.load('en_core_web_sm', disable=['lemmatizer']) 
nlp.remove_pipe("lemmatizer") #DISABLE seems not to be working, this is a good replacement

print(1, nlp.pipe_names)

#add pipeline component
config = {"mode": "lookup"}
lemmatizer = nlp.add_pipe("lemmatizer", config=config)
lemmatizer.initialize()

print(2, nlp.pipe_names)

sentence = "What a wonderful day today for playing"
doc = nlp(sentence)```

If I look at the nlp.pipe_names output:

1 ['tok2vec', 'tagger', 'parser', 'attribute_ruler', 'ner']
2 ['tok2vec', 'tagger', 'parser', 'attribute_ruler', 'ner']

The lemmatizer has not been added: I tried with nlp = English() and works.
Another issue, I had to use nlp.remove_pipe("lemmatizer") because disable was not working.

[polm]

This looks like a usage question rather than a bug, so I'll move it to discussions...