Using sourcery with --watch appends to the template instead of replacing it

[rpassis]

Not sure if this is a user error, expected behaviour or a bug but I just thought I'd create an issue as I couldn't find an answer to this anywhere else.

Given the following template stencil

{% for class in types.classes|annotated:"ImmutableConvertibleType" %}
{% set structName %}{{ class.name }}Struct{% endset %}
// sourcery:file:Model/{{ structName }}Struct.swift
struct {{ structName }} {}
// sourcery:end
{% endfor %}

If I run this with sourcery --watch, every time I modify/save the template, a new copy of the rendered text is appended to my output. So I end up with a file like this:

// Generated using Sourcery 0.16.0 — https://github.com/krzysztofzablocki/Sourcery
// DO NOT EDIT

struct ArticleStruct {}

struct ArticleStruct {}

struct ArticleStruct {}

struct ArticleStructABC {}

...etc

Interestingly, if I don't specify the output file with // sourcery:file:Model/{{ structName }}Struct.swift, it works as expected and the rendered text replaces the previous version.

Also if I run sourcery as a one-off command without --watch, it also works as expected.

Is this a bug or am I missing something?

Thanks!
Rog

[paultas]

yep, for me it's actual too now. Anybody found a solution?
cc: @krzysztofzablocki @ilyapuchka @jschmid @DivineDominion