Unverified Commit b4ce2478 authored by Lily Foster's avatar Lily Foster
Browse files

nodePackages: add script to remove attrs for aliases 

Regenerating the entire package set takes ages and editing the file by
hand is difficult. Instead we provide a script to remove packages
without regenerating to make it easy.
parent 897876e4

pkgs/development/node-packages/aliases.nix

+4 −0
Original line number Diff line number Diff line 
pkgs: lib: self: super:



### Deprecated aliases - for backward compatibility

###

### !!! NOTE !!!

### Use `./remove-attr.py [attrname]` in this directory to remove your alias

### from the `nodePackages` set without regenerating the entire file.



with self;

pkgs/development/node-packages/remove-attr.py

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Original line number Diff line number Diff line 
#!/usr/bin/env nix-shell

#!nix-shell -i python3 -p



import collections.abc

import fileinput

import json

import os.path

import re

import sys





def remove(attr):

    with open(os.path.join(os.path.dirname(__file__), 'node-packages.json'), 'r+') as node_packages_json:

        packages = json.load(node_packages_json)

        idx = 0

        while idx < len(packages):

            if packages[idx] == attr or (isinstance(packages[idx], collections.abc.Mapping) and next(iter(packages[idx].keys())) == attr):

                del packages[idx]

            else:

                idx += 1



        node_packages_json.seek(0)

        for idx, package in enumerate(packages):

            if idx == 0:

                node_packages_json.write('[\n  ')

            else:

                node_packages_json.write(', ')

            json.dump(package, node_packages_json)

            node_packages_json.write('\n')

        node_packages_json.write(']\n')

        node_packages_json.truncate()



    with fileinput.input(os.path.join(os.path.dirname(__file__), 'node-packages.nix'), inplace=1) as node_packages:

        safe_attr = re.escape(attr)

        in_attr = False

        for line in node_packages:

            if in_attr:

                if re.fullmatch(r'  \};\n', line):

                    in_attr = False

            else:

                if re.fullmatch(rf'  (?:{safe_attr}|"{safe_attr}") = nodeEnv\.buildNodePackage \{{\n', line):

                    in_attr = True

                else:

                    sys.stdout.write(line)





if __name__ == '__main__':

    import argparse



    parser = argparse.ArgumentParser(description='Remove a given package from the node-packages.nix file')

    parser.add_argument('attr', help='The package attribute to remove')

    args = parser.parse_args()



    remove(args.attr)