Error en composer al Instalar Guarani 3.16

Buenas tardes, estoy siguiendo la guia http://documentacion.siu.edu.ar/wiki/SIU-Guarani/version3.16.0/instalacion_desde_cero/instalacion/gestion/linux al ejecutar el comando composer install del paso 4) me da el siguiente error:

requirements could not be resolved to an installable set of packages.

  Problem 1
    - siu-toba/framework v3.1.0 requires onelogin/php-saml ^2.13 -> satisfiable by onelogin/php-saml[v2.13.0, v2.14.0].
    - siu-toba/framework v3.1.1 requires onelogin/php-saml ^2.13 -> satisfiable by onelogin/php-saml[v2.13.0, v2.14.0].
    - siu-toba/framework v3.1.2 requires onelogin/php-saml ^2.13 -> satisfiable by onelogin/php-saml[v2.13.0, v2.14.0].
    - siu-toba/framework v3.1.3 requires onelogin/php-saml ^2.13 -> satisfiable by onelogin/php-saml[v2.13.0, v2.14.0].
    - siu-toba/framework v3.1.4 requires onelogin/php-saml ^2.13 -> satisfiable by onelogin/php-saml[v2.13.0, v2.14.0].
    - siu-toba/framework 3.0.1 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.0 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.10 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.11 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.12 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.13 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.14 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.15 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.16 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.17 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.18 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.19 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.2 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.20 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.21 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.22 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.23 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.24 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.25 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.26 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.27 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.28 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.29 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.3 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.30 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.31 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.4 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.5 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.6 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.7 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.8 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - siu-toba/framework v3.0.9 requires onelogin/php-saml ~2.10 -> satisfiable by onelogin/php-saml[2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.10.6, 2.10.7, 2.11.0, v2.12.0, v2.13.0, v2.14.0].
    - onelogin/php-saml v2.14.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml v2.13.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml v2.12.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.11.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.10.7 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.10.6 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.10.5 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.10.4 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.10.3 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.10.2 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.10.1 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - onelogin/php-saml 2.10.0 requires ext-dom * -> the requested PHP extension dom is missing from your system.
    - Installation request for siu-toba/framework ^3.0 -> satisfiable by siu-toba/framework[3.0.1, v3.0.0, v3.0.10, v3.0.11, v3.0.12, v3.0.13, v3.0.14, v3.0.15, v3.0.16, v3.0.17, v3.0.18, v3.0.19, v3.0.2, v3.0.20, v3.0.21, v3.0.22, v3.0.23, v3.0.24, v3.0.25, v3.0.26, v3.0.27, v3.0.28, v3.0.29, v3.0.3, v3.0.30, v3.0.31, v3.0.4, v3.0.5, v3.0.6, v3.0.7, v3.0.8, v3.0.9, v3.1.0, v3.1.1, v3.1.2, v3.1.3, v3.1.4].

  To enable extensions, verify that they are enabled in your .ini files:
    - /etc/php/7.1/cli/php.ini
    - /etc/php/7.1/cli/conf.d/10-opcache.ini
    - /etc/php/7.1/cli/conf.d/10-pdo.ini
    - /etc/php/7.1/cli/conf.d/20-apcu.ini
    - /etc/php/7.1/cli/conf.d/20-calendar.ini
    - /etc/php/7.1/cli/conf.d/20-ctype.ini
    - /etc/php/7.1/cli/conf.d/20-curl.ini
    - /etc/php/7.1/cli/conf.d/20-exif.ini
    - /etc/php/7.1/cli/conf.d/20-fileinfo.ini
    - /etc/php/7.1/cli/conf.d/20-ftp.ini
    - /etc/php/7.1/cli/conf.d/20-gd.ini
    - /etc/php/7.1/cli/conf.d/20-gettext.ini
    - /etc/php/7.1/cli/conf.d/20-iconv.ini
    - /etc/php/7.1/cli/conf.d/20-igbinary.ini
    - /etc/php/7.1/cli/conf.d/20-json.ini
    - /etc/php/7.1/cli/conf.d/20-mbstring.ini
    - /etc/php/7.1/cli/conf.d/20-mcrypt.ini
    - /etc/php/7.1/cli/conf.d/20-msgpack.ini
    - /etc/php/7.1/cli/conf.d/20-pdo_pgsql.ini
    - /etc/php/7.1/cli/conf.d/20-pgsql.ini
    - /etc/php/7.1/cli/conf.d/20-phar.ini
    - /etc/php/7.1/cli/conf.d/20-posix.ini
    - /etc/php/7.1/cli/conf.d/20-readline.ini
    - /etc/php/7.1/cli/conf.d/20-shmop.ini
    - /etc/php/7.1/cli/conf.d/20-sockets.ini
    - /etc/php/7.1/cli/conf.d/20-sysvmsg.ini
    - /etc/php/7.1/cli/conf.d/20-sysvsem.ini
    - /etc/php/7.1/cli/conf.d/20-sysvshm.ini
    - /etc/php/7.1/cli/conf.d/20-tokenizer.ini
    - /etc/php/7.1/cli/conf.d/20-zip.ini
    - /etc/php/7.1/cli/conf.d/25-apcu_bc.ini
    - /etc/php/7.1/cli/conf.d/25-memcached.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

A que se debe??

Desde ya muchas gracias!

Buenos días, el composer lock lo tenes sin cambios?
Podrías por favor verificar si posee alguno?

svn st composer.lock

Saludos.

Hola Walter,

Cuando instalaste PHP de acuerdo a las indicaciones de los requisitos previos en el Paso 1, instalaste todos los paquetes listados allí?

Si lo hiciste, podes probar agregando también el paquete php7.1-xml, es decir:

sudo apt-get install php7.1-xml

Luego, volvé a ejecutar el comando composer install.

Contanos cómo te fue,

Saludos,
Román.

Walter, en la UNT, nos pasó lo mismo y lo solucionamos con lo que te está comentando Román.

Saludos

Buenas tardes, hay algun problema si procedo con la instalacion con php 7.2 ?

Hola Ariel,

Por qué querrías hacer eso?

Saludos,
Román.