updating PATH with ansible - system wide

ansible-path.md

Option 1

- name: compile sources
  shell:
    coffee -o lib -c src 
    chdir=${mysourcedir}
  environment:
    PATH: $PATH:/opt/node/bin

Option 2

- name: add {{extra_path}} to path
  lineinfile:
    dest: /etc/environment
    state: present
    backrefs: yes
    regexp: 'PATH=(["]*)((?!.*?{{extra_path}}).*?)(["]*)$'
    line: "PATH=\1\2:{{extra_path}}\3"

How do you use it with an actual path?
I tried using it, and ansible has trouble processing all the \1\2 expressions

Same as @ajweitz ...doesn't work:

ERROR! Syntax Error while loading YAML.
  found unknown escape character

The offending line appears to be:

        regexp: 'PATH=(["]*)((?!.*?{{extra_path}}).*?)(["]*)$'
        line: "PATH=\1\2:{{extra_path}}\3"
                    ^ here
We could be wrong, but this one looks like it might be an issue with
missing quotes. Always quote template expression brackets when they
start a value. For instance:

Same as @ajweitz ...doesn't work:

ERROR! Syntax Error while loading YAML.
  found unknown escape character

The offending line appears to be:

        regexp: 'PATH=(["]*)((?!.*?{{extra_path}}).*?)(["]*)$'
        line: "PATH=\1\2:{{extra_path}}\3"
                    ^ here
We could be wrong, but this one looks like it might be an issue with
missing quotes. Always quote template expression brackets when they
start a value. For instance:

• name: add {{extra_path}} to path
  lineinfile:
  dest: /etc/environment
  state: present
  backrefs: yes
  regexp: 'PATH=(["])((?!.?{{extra_path}}).?)(["])$'
  line: "PATH=\1\2:{{extra_path}}\3"```

You need escaped back slash.