Trouble installing scons (needed for 281x adafruit neopixel library) (SOLVED)

linkreincarnate

So I would like to run some 2812b chainable rgb leds from my pi for lit fightstick build. The problem is I have to install scons as teh first step. Scons seems to want a package that doesn't exist anymore (I guess the library is old) None of the force install commands help.

Here is what my console shows when I try to install it.

'(env) pi@Iron-ManMk1Fightstick:~ $ sudo apt-get -f install scons
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
expect : Depends: tcl8.5 (>= 8.5.0) but it is not going to be installed
libjpeg62-turbo-dev : Depends: libjpeg62-turbo (= 1:1.3.1-12) but 1:1.4.1-2 is to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
(env) pi@Iron-ManMk1Fightstick:~ $'

I can force the libjpeg62-turbo to install the right package but tcl is being a right pain in the butt. when I try to install tcl I get the exact same output.

Has anyone installed this library on your retropie? Anyone have any tips for getting it to work? Anyone have an alternative software for controling these leds on the retropie?

mitu

@linkreincarnate What distro are you using ? Debian Jessie's scons has only a dependency on the python library and not on tcl or others.
I don't this scons is the culprit here, do you have any custom held packages configured ?

linkreincarnate

I'm not sure what you are asking. I am running off of the official image. I installed some stuff for google voice asistant and a python script for running a stepper if that helps. I'm kind anew to linux to be honest. I haven't been in any configuration files.

mitu

@linkreincarnate which official image - the Raspbian image or the one provided by the RetroPie project ?

linkreincarnate

@linkreincarnate The official retropie image I should say.

mitu

@linkreincarnate Do an apt-get update and then again try apt-get -f install - do you still get the dependency errors ?

linkreincarnate

@mitupi Yeah this is what it looks like...

@Iron-ManMk1Fightstick:~ $ apt-get -f install
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
pi@Iron-ManMk1Fightstick:~ $ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... failed.
The following packages have unmet dependencies:
expect : Depends: tcl8.5 (>= 8.5.0) but it is not installed
libjpeg62-turbo-dev : Depends: libjpeg62-turbo (= 1:1.3.1-12) but 1:1.4.1-2 is installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
E: Unable to correct dependencies
pi@Iron-ManMk1Fightstick:~ $

mitu

@linkreincarnate You seem have some mixed repos in your sources list. What's the content of your /etc/apt/sources.list file ?
You could try running aptitude install instead of apt-get, it might be able to resolve your depencency errors.

linkreincarnate

deb http://mirrordirector.raspbian.org/raspbian/ jessie main contrib non-free rpi

Uncomment line below then 'apt-get update' to enable 'apt-get source'

#deb-src http://archive.raspbian.org/raspbian/ jessie main contrib non-free rpi

that is what is in my sources.list

This is what I get when I use apptitude install scons

pi@Iron-ManMk1Fightstick:/etc/apt $ sudo aptitude install scons
The following NEW packages will be installed:
scons
0 packages upgraded, 1 newly installed, 0 to remove and 16 not upgraded.
Need to get 518 kB of archives. After unpacking 2,207 kB will be used.
The following packages have unmet dependencies:
expect : Depends: tcl8.5 (>= 8.5.0) but it is not going to be installed.
libjpeg62-turbo-dev : Depends: libjpeg62-turbo (= 1:1.3.1-12) but 1:1.4.1-2 is installed.
The following actions will resolve these dependencies:

 Remove the following packages:

```
expect                      
```
```
libdirectfb-dev             
```
```
libjpeg-dev                 
```
```
libjpeg62-turbo-dev         
```
```
libsdl1.2-dev               
```

Accept this solution? [Y/n/q/?]

mitu

@linkreincarnate It's strange how you have these dependencies, with the same repositories in the sources.list file I can install both expect and scons.
Remove the offending packages - via aptitude - and try again to install scons.

linkreincarnate

ok I got it on there. I sure hope that stuff i removed wasn't important... ¯_(ツ)_/¯

thanks for your help!

mitu

@linkreincarnate said in Trouble installing scons (needed for 281x adafruit neopixel library):

ok I got it on there. I sure hope that stuff i removed wasn't important... ¯_(ツ)_/¯

Any -dev package is usefull when compiling something new, not for the normal system usage.
You might need some of them if you're installing from source any new packages, but the RetroPie setup scripts already do the installation for you.

linkreincarnate

good to know. Once again thanks a bunch.