Moving from LaTeX to typst was the best decision I made last year. Really the only thing I missed from LaTeX was the ability to annotate a block equation using text on the left/right; and tagging specific lines of an equation being able to reference them. This package adds those features in a familiar way. Use these commands inside an equation block:
#intertext[add paragraphs to a block equation without changing &-alignment]#flushl[left-flushed content on the same line]#flushr[right-flushed content on the same line]#tag[(auto-tag)]— refer to this equation line with#eqref(<eq-auto-tag>)or@eq-auto-tag,#tag(<custom-label>)[(custom tag)]— reference with#eqref(<custom-label>)or@custom-label
This is a simplified alternative to the equate package if you don’t need automatic equation sub-numbering. It uses place and vertical space instead of re-implementing & alignments.
Hopefully this will be useful 