[Buildroot] [v2 4/6] package/nodejs: Add /usr/lib/node_modules/.bin to PATH

[Yann E. MORIN <yann.morin.1998@free.fr>]

Martin, All,

On 2015-06-27 03:01 +0100, Martin Bark spake thusly:
> This patch adds /usr/lib/node_modules/.bin to PATH so that global
> node_modules are accessible from the command line
> 
> Signed-off-by: Martin Bark <martin@barkynet.com>
> 
> ---
> Changes v1 -> v2
>  - Improved commit message
> 
> Signed-off-by: Martin Bark <martin@barkynet.com>
> ---
>  package/nodejs/nodejs.mk | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/package/nodejs/nodejs.mk b/package/nodejs/nodejs.mk
> index 59e03b0..5d95f77 100644
> --- a/package/nodejs/nodejs.mk
> +++ b/package/nodejs/nodejs.mk
> @@ -111,6 +111,11 @@ define NODEJS_INSTALL_MODULES
>  		$(HOST_DIR)/usr/bin/npm install \
>  		$(NODEJS_MODULES_LIST) \
>  	)
> +
> +	# Add global node_modules to PATH
> +	$(INSTALL) -d -m 0755 $(TARGET_DIR)/etc/profile.d
> +	printf "export PATH=\x24PATH:/usr/lib/node_modules/.bin\n" \

Nice trick, but what about the slightly-more readable;

    printf 'PATH="$${PATH}:/usr/lib/node_modules/.bin"\n' \
        >$(TARGET_DIR)/etc/profile.d/node_modules.sh

  - because this is in a Makefile, so we need to $-escape the $.

  - because we do not want that $ to be interpreted by the shell (at build
    time!), we single-quote it.

  - because whoever knows what PATH is made of would be a fool (and
    because the world is cruel), we double-quote it (at runtime!)

Otherwise, what is the reason to have nodejs modules available as
commands from a login (!) shell? (Note: nodejs-noob speaking!)

Regards,
Yann E. MORIN.

> +		>$(TARGET_DIR)/etc/profile.d/node_modules.sh
>  endef
>  endif
>  
> -- 
> 2.1.4
> 
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