> What do you mean by "heavyweight"?

Rails latest release (7.0.4) have 386,970 lines of code in total, 310,779 of it being Ruby code. 3000 files in total. Just the `lib` directory of `activerecord` has 33,036 lines of code, across 369 files.

By most metrics, RoR is pretty heavyweight, as their literal taglines are "Ruby on Rails scales from HELLO WORLD to IPO" and "A web-app framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern", so it needs to be pretty big to support those use cases.

Full `cloc` report in case someone is curious:

        4268 text files.
        3839 unique files.
         511 files ignored.
    
    github.com/AlDanial/cloc v 1.96  T=1.25 s (3079.1 files/s, 434339.6 lines/s)
    -------------------------------------------------------------------------------
    Language                     files          blank        comment           code
    -------------------------------------------------------------------------------
    Ruby                          3013          73152          54669         310779
    Markdown                        92          19324            388          45525
    JavaScript                      87           2974           2170          20955
    YAML                           171            406            350           3679
    CSS                             23            347            152           2409
    ERB                            386            303              9           2244
    CoffeeScript                    12             97            125            413
    JSON                            11              7              0            372
    HTML                            21             15              3            200
    Bourne Shell                     2             20             25            167
    Text                             7              0              0             51
    yacc                             1              4              0             46
    SQL                              1              6              0             43
    Dockerfile                       1              7              7             40
    SVG                              7              0              1             36
    builder                          3              1              0             10
    DTD                              1              0              0              1
    -------------------------------------------------------------------------------
    SUM:                          3839          96663          57899         386970
    -------------------------------------------------------------------------------