We're moving our entire codebase away from Langchain and related products (langgraph, langsmith). I originally thought the library had potential and just needed some polishing which would come with time, but it's just been getting worse and worse. LCEL is the weirdest half-baked idea; it's a nice gimmick that makes your code impossible to debug in a step through debugger. Random stuff breaks with every other release. I deeply regret using it by now.