Drupal-console: drupal/console: Installation failed

Created on 9 May 2018 · 41Comments · Source: hechoendrupal/drupal-console

Installation failed, reverting ./composer.json to its original content

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

`(10:24:22) [informedia] composer require drupal/console:~1.0 --prefer-dist --optimize-autoloader
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Conclusion: don't install drupal/console 1.8.0
- Conclusion: don't install drupal/console 1.7.0
- Conclusion: don't install drupal/console 1.6.1
- Conclusion: don't install drupal/console 1.6.0
- Conclusion: don't install drupal/console 1.5.0
- Conclusion: don't install drupal/console 1.4.0
- Conclusion: don't install drupal/console 1.3.2
- Conclusion: don't install drupal/console 1.3.1
- Conclusion: don't install drupal/console 1.3.0
- Conclusion: don't install drupal/console 1.2.0
- Conclusion: don't install drupal/console 1.1.1
- Conclusion: don't install drupal/console 1.1.0
- Conclusion: don't install drupal/console 1.0.2
- Conclusion: don't install drupal/console 1.0.1
- Conclusion: don't install drupal/console 1.0.0
- Conclusion: don't install drupal/console 1.0.0-rc26
- drupal/console 1.0.0-alpha1 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-alpha2 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-beta1 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-beta2 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-beta3 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-beta4 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-beta5 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc1 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc10 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc2 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc22 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc23 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc24 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc25 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc3 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc4 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc5 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc6 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc7 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc8 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- drupal/console 1.0.0-rc9 requires symfony/http-foundation ~2.8 -> satisfiable by symfony/http-foundation[2.8.x-dev].
- Conclusion: don't install symfony/http-foundation 2.8.x-dev
- drupal/console 1.0.0-rc15 requires symfony/http-foundation >=2.7 <3.0 -> satisfiable by symfony/http-foundation[2.7.x-dev, 2.8.x-dev].
- drupal/console 1.0.0-rc16 requires symfony/http-foundation >=2.7 <3.0 -> satisfiable by symfony/http-foundation[2.7.x-dev, 2.8.x-dev].
- drupal/console 1.0.0-rc17 requires symfony/http-foundation >=2.7 <3.0 -> satisfiable by symfony/http-foundation[2.7.x-dev, 2.8.x-dev].
- drupal/console 1.0.0-rc18 requires symfony/http-foundation >=2.7 <3.0 -> satisfiable by symfony/http-foundation[2.7.x-dev, 2.8.x-dev].
- drupal/console 1.0.0-rc19 requires symfony/http-foundation >=2.7 <3.0 -> satisfiable by symfony/http-foundation[2.7.x-dev, 2.8.x-dev].
- drupal/console 1.0.0-rc20 requires symfony/http-foundation >=2.7 <3.0 -> satisfiable by symfony/http-foundation[2.7.x-dev, 2.8.x-dev].
- drupal/console 1.0.0-rc21 requires symfony/http-foundation >=2.7 <3.0 -> satisfiable by symfony/http-foundation[2.7.x-dev, 2.8.x-dev].
- Conclusion: don't install symfony/http-foundation 2.7.x-dev
- drupal/console 1.0.0-rc14 requires drupal/console-core 1.0.0-rc14 -> satisfiable by drupal/console-core[1.0.0-rc14].
- Conclusion: don't install drupal/console-core 1.0.0-rc14
- drupal/console 1.0.0-rc13 requires drupal/console-core 1.0.0-rc13 -> satisfiable by drupal/console-core[1.0.0-rc13].
- Conclusion: don't install drupal/console-core 1.0.0-rc13
- drupal/console 1.0.0-rc12 requires drupal/console-core 1.0.0-rc12 -> satisfiable by drupal/console-core[1.0.0-rc12].
- Conclusion: don't install drupal/console-core 1.0.0-rc12
- Conclusion: remove symfony/http-foundation v3.4.9
- Installation request for symfony/dom-crawler (locked at v4.0.9) -> satisfiable by symfony/dom-crawler[v4.0.9].
- Installation request for symfony/console (locked at v3.4.9, required as ~3.4.0) -> satisfiable by symfony/console[v3.4.9].
- Installation request for drupal/console ~1.0 -> satisfiable by drupal/console[1.0.0, 1.0.0-alpha1, 1.0.0-alpha2, 1.0.0-beta1, 1.0.0-beta2, 1.0.0-beta3, 1.0.0-beta4, 1.0.0-beta5, 1.0.0-rc1, 1.0.0-rc10, 1.0.0-rc11, 1.0.0-rc12, 1.0.0-rc13, 1.0.0-rc14, 1.0.0-rc15, 1.0.0-rc16, 1.0.0-rc17, 1.0.0-rc18, 1.0.0-rc19, 1.0.0-rc2, 1.0.0-rc20, 1.0.0-rc21, 1.0.0-rc22, 1.0.0-rc23, 1.0.0-rc24, 1.0.0-rc25, 1.0.0-rc26, 1.0.0-rc3, 1.0.0-rc4, 1.0.0-rc5, 1.0.0-rc6, 1.0.0-rc7, 1.0.0-rc8, 1.0.0-rc9, 1.0.1, 1.0.2, 1.1.0, 1.1.1, 1.2.0, 1.3.0, 1.3.1, 1.3.2, 1.4.0, 1.5.0, 1.6.0, 1.6.1, 1.7.0, 1.8.0].
- Conclusion: don't install symfony/http-foundation v3.4.9
- drupal/console 1.0.0-rc11 requires symfony/http-foundation >=2.7 <3.2 -> satisfiable by symfony/http-foundation[2.7.x-dev, 2.8.x-dev, 3.0.x-dev, 3.1.x-dev].
- Can only install one of: symfony/http-foundation[3.0.x-dev, v3.4.9].
- Can only install one of: symfony/http-foundation[3.1.x-dev, v3.4.9].
- Installation request for symfony/http-foundation (locked at v3.4.9, required as ~3.4.0) -> satisfiable by symfony/http-foundation[v3.4.9].

Installation failed, reverting ./composer.json to its original content.`

Source

b3wii

Most helpful comment

@begrafx Can delete your _vendor_ directory and _composer.lock_ file, add the Drupal Console require to your _composer.json_ followed by running _$ composer install_. That is what helped me solving this problem.

mikewink on 10 Jun 2018

👍16 ❤4 🎉3 😄2 👀1

All 41 comments

I get this same thing when I try to install. Hoping someone has a solution.

begrafx on 21 May 2018

Problem 1
    - Installation request for drupal/console ^1.8.0 -> satisfiable by drupal/console[1.8.0].
    - Conclusion: remove symfony/dom-crawler v4.1.0
    - Conclusion: don't install symfony/dom-crawler v4.1.0
    - drupal/console 1.8.0 requires symfony/dom-crawler ~2.8|~3.0 -> satisfiable by symfony/dom-crawler[2.8.x-dev, 3.0.x-dev, 3.1.x-dev, 3.2.x-dev, 3.3.x-dev, 3.4.x-dev, v2.8.0, v2.8.0-BETA1, v2.8.1, v2.8.10, v2.8.11, v2.8.12, v2.8.13, v2.8.14, v2.8.15, v2.8.16, v2.8.17, v2.8.18, v2.8.19, v2.8.2, v2.8.20, v2.8.21, v2.8.22, v2.8.23, v2.8.24, v2.8.25, v2.8.26, v2.8.27, v2.8.28, v2.8.29, v2.8.3, v2.8.30, v2.8.31, v2.8.32, v2.8.33, v2.8.34, v2.8.35, v2.8.36, v2.8.37, v2.8.38, v2.8.39, v2.8.4, v2.8.40, v2.8.41, v2.8.5, v2.8.6, v2.8.7, v2.8.8, v2.8.9, v3.0.0, v3.0.0-BETA1, v3.0.1, v3.0.2, v3.0.3, v3.0.4, v3.0.5, v3.0.6, v3.0.7, v3.0.8, v3.0.9, v3.1.0, v3.1.0-BETA1, v3.1.0-RC1, v3.1.1, v3.1.10, v3.1.2, v3.1.3, v3.1.4, v3.1.5, v3.1.6, v3.1.7, v3.1.8, v3.1.9, v3.2.0, v3.2.0-BETA1, v3.2.0-RC1, v3.2.0-RC2, v3.2.1, v3.2.10, v3.2.11, v3.2.12, v3.2.13, v3.2.14, v3.2.2, v3.2.3, v3.2.4, v3.2.5, v3.2.6, v3.2.7, v3.2.8, v3.2.9, v3.3.0, v3.3.0-BETA1, v3.3.0-RC1, v3.3.1, v3.3.10, v3.3.11, v3.3.12, v3.3.13, v3.3.14, v3.3.15, v3.3.16, v3.3.17, v3.3.2, v3.3.3, v3.3.4, v3.3.5, v3.3.6, v3.3.7, v3.3.8, v3.3.9, v3.4.0, v3.4.0-BETA1, v3.4.0-BETA2, v3.4.0-BETA3, v3.4.0-BETA4, v3.4.0-RC1, v3.4.0-RC2, v3.4.1, v3.4.10, v3.4.11, v3.4.2, v3.4.3, v3.4.4, v3.4.5, v3.4.6, v3.4.7, v3.4.8, v3.4.9].
    - Can only install one of: symfony/dom-crawler[2.8.x-dev, v4.1.0].
    - Can only install one of: symfony/dom-crawler[3.0.x-dev, v4.1.0].
    - Can only install one of: symfony/dom-crawler[3.1.x-dev, v4.1.0].
    - Can only install one of: symfony/dom-crawler[3.2.x-dev, v4.1.0].
    - Can only install one of: symfony/dom-crawler[3.3.x-dev, v4.1.0].
    - Can only install one of: symfony/dom-crawler[3.4.x-dev, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.0, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.0-BETA1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.10, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.11, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.12, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.13, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.14, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.15, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.16, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.17, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.18, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.19, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.20, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.21, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.22, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.23, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.24, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.25, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.26, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.27, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.28, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.29, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.3, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.30, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.31, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.32, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.33, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.34, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.35, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.36, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.37, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.38, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.39, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.4, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.40, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.41, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.5, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.6, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.7, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.8, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v2.8.9, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.0, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.0-BETA1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.3, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.4, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.5, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.6, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.7, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.8, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.0.9, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.0, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.0-BETA1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.0-RC1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.10, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.3, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.4, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.5, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.6, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.7, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.8, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.1.9, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.0, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.0-BETA1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.0-RC1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.0-RC2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.10, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.11, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.12, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.13, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.14, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.3, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.4, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.5, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.6, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.7, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.8, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.2.9, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.0, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.0-BETA1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.0-RC1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.10, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.11, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.12, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.13, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.14, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.15, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.16, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.17, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.3, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.4, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.5, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.6, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.7, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.8, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.3.9, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.0, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.0-BETA1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.0-BETA2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.0-BETA3, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.0-BETA4, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.0-RC1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.0-RC2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.1, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.10, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.11, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.2, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.3, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.4, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.5, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.6, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.7, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.8, v4.1.0].
    - Can only install one of: symfony/dom-crawler[v3.4.9, v4.1.0].
    - Installation request for symfony/dom-crawler (locked at v4.1.0) -> satisfiable by symfony/dom-crawler[v4.1.0].

rizoen on 31 May 2018

I'm confused. This issue points to #3895 and #3895 points...HERE. Both have been closed and neither offer solutions.

begrafx on 3 Jun 2018

mikewink on 10 Jun 2018

👍16 ❤4 🎉3 😄2 👀1

I tried the @mikewink solution, and it works. Thanks.
Versions:
Drupal version : 8.5.3 and 8.5.4
PHP version: 7.2.5

bigsony on 11 Jun 2018

Solved it only removed the symfony/dom-crawler and composer.lock， then run composer require drupal/console:~1.8.0 --prefer-dist --optimize-autoloader. And installed the drupal console and dependencies. Drupal 8.6.0 php 7.29.

sealionking on 10 Sep 2018

❤6 👍6

I solved it by adding "drupal/console": "~1.0" in the require section and running composer update - hope this helps.

nidash on 16 Oct 2018

👍13 ❤2

This still occurs with a fresh Drupal 8.6.3 install. The docs should reflect this.. had to jump through hoops.

kevinquillen on 9 Nov 2018

👍2

@mikewink it works for me thanks :).

fazni on 4 Jan 2019

I got this today with 8.6.7. Deleted composer.lock and vendor/, ran composer clear-cache and composer install and it works.

This was a fresh site, so I'm not too concerned about changes to the dependencies.

Thanks for the suggestions here.

damontgomery on 18 Jan 2019

👍2

I solved it by adding "drupal/console": "~1.0" in the require section and running composer update - hope this helps.
@nidash
Same here the only solution that worked was adding "drupal/console": "~1.0" to composer.json and run composer update --with-dependencies

acnimda on 22 Mar 2019

👍4

I solved it by adding "drupal/console": "~1.0" in the require section and running composer update - hope this helps.

Excellent workaround for now! Thanks @nidash

RishiKulshreshtha on 22 Mar 2019

I solved it by adding "drupal/console": "~1.0" in the require section and running composer update - hope this helps.

Thanks @nidash
It's solved the problem for me.

phannphong on 24 Mar 2019

I solved it by adding "drupal/console": "~1.0" in the require section and running composer update - hope this helps.

Yep fixed it for me too

sphism on 27 Mar 2019

I didn't want our students to modify composer.json manually, this command also got console working:
composer require drupal/console:~1.0 symfony/finder:v3.4.27 symfony/debug:v3.4.27 symfony/filesystem:v3.4.27

Note: it is also fixing the versions of symfony/finder, s/debug, and s/filesystem to earlier versions, which is likely not desirable. Editing the .json file directly (as described above) is slightly more difficult but has a slightly better outcome.

ashabed on 19 May 2019

👍4

Hi @ashabed the solution provided by @RishiKulshreshtha, @phannphong and @sphism is as is documented on https://docs.drupalconsole.com/en/getting/composer.html

Could you let me know how do you ended up with a different version in composer, maybe is outdated documentation that you find that we need to fix?

enzolutions on 20 May 2019

👍1

After deleting Vendor directory and Composer.lock file, it worked for me!

Thanks !

sachinsuryavanshi on 22 May 2019

Drupal 8.7.2
after:

installing Drush:9 version (deleting Drush:8 version first)
deleting Vendor and composer.lock file and
run ashabed's command (composer require drupal/console:~1.0 symfony/finder:v3.4.27 symfony/debug:v3.4.27 symfony/filesystem:v3.4.27)

it worked!

Thanks all

EdensRiver on 24 May 2019

I had to:
delete the symfony/dom-crawler from composer.json require section
add drupal/console:~1.0 to composer.json require section
delete vendor directory
run composer update
most likely I could have left off version for console. However I'm not touching it now!

rg-viza on 10 Jun 2019

Manually adding "drupal/console": "^1.0" to the require section of the projects' composer.json followed by a composer update worked for me, but, not without downgrading symfony/finder and symfony/dom-crawler:

Downgrading symfony/finder (v4.3.2 => v3.4.29): Loading from cache
[...]
Downgrading symfony/dom-crawler (v4.3.2 => v3.4.29): Loading from cache

This is on a clean Drupal 8.7.4 installation. What could be the implications of this and more importantly, why does drupal/console v1.9.0 requires symfony/dom-crawler ~2.8|~3.0 ? can this be changed to work with ~4.0?

apparatchiki on 15 Jul 2019

👍1

Currently using a fresh install of D8.8.1 and experiencing the same issues: cannot install because symfony/finder version too high (from site install).
apparatchiki's comment of removing vendor and composer.lock file, then running the drupal console require command installs Drupal Console and then rest of the site requirements by downgrading symfony/finder

byngj123 on 20 Jan 2020

./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Package zendframework/zend-diactoros is abandoned, you should avoid using it. Use laminas/laminas-diactoros instead.
Package zendframework/zend-escaper is abandoned, you should avoid using it. Use laminas/laminas-escaper instead.
Package zendframework/zend-feed is abandoned, you should avoid using it. Use laminas/laminas-feed instead.
Package zendframework/zend-stdlib is abandoned, you should avoid using it. Use laminas/laminas-stdlib instead.
Writing lock file
Generating autoload files
Hardening vendor directory with .htaccess and web.config files.
Cleaning vendor directory.
Scaffolding files for drupal/core:

Copy [project-root]/.editorconfig from assets/scaffold/files/editorconfig
Copy [project-root]/.gitattributes from assets/scaffold/files/gitattributes
Copy [web-root]/.csslintrc from assets/scaffold/files/csslintrc
Copy [web-root]/.eslintignore from assets/scaffold/files/eslintignore
Copy [web-root]/.eslintrc.json from assets/scaffold/files/eslintrc.json
Copy [web-root]/.ht.router.php from assets/scaffold/files/ht.router.php
Copy [web-root]/.htaccess from assets/scaffold/files/htaccess
Copy [web-root]/example.gitignore from assets/scaffold/files/example.gitignore
Copy [web-root]/index.php from assets/scaffold/files/index.php
Copy [web-root]/INSTALL.txt from assets/scaffold/files/drupal.INSTALL.txt
Copy [web-root]/README.txt from assets/scaffold/files/drupal.README.txt
Copy [web-root]/robots.txt from assets/scaffold/files/robots.txt
Copy [web-root]/update.php from assets/scaffold/files/update.php
Copy [web-root]/web.config from assets/scaffold/files/web.config
Copy [web-root]/sites/README.txt from assets/scaffold/files/sites.README.txt
Copy [web-root]/sites/development.services.yml from assets/scaffold/files/development.services.yml
Copy [web-root]/sites/example.settings.local.php from assets/scaffold/files/example.settings.local.php
Copy [web-root]/sites/example.sites.php from assets/scaffold/files/example.sites.php

Installation failed, reverting ./composer.json to its original content.

[RuntimeException]
Could not delete /Applications/MAMP/htdocs/newtheming/sites/default/default.services.yml:

require [--dev] [--prefer-source] [--prefer-dist] [--no-progress] [--no-suggest] [--no-update] [--no-scripts] [--update-no-dev] [--update-with-dependencies] [--update-with-all-dependencies] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--] []...

naveedjadoon on 4 Mar 2020

I'm using an Acquia site on DevDesktop. I tried deleting the composer.json file and when I reran composer install the entire site failed to load, so I don't think I should try that on this second system I have with the site running. Here's my output:

$ composer require drupal/console:~1.0 --prefer-dist --optimize-autoloader
./composer.json has been updated
Gathering patches for root package.
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - drupal/console 1.0.0-rc9 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc8 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc7 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc6 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc5 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc4 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc3 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc25 requires symfony/expression-language ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc24 requires symfony/expression-language ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc23 requires symfony/expression-language ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc22 requires symfony/expression-language ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc21 requires symfony/css-selector >=2.7 <3.0 -> no matching package found.
    - drupal/console 1.0.0-rc20 requires symfony/css-selector >=2.7 <3.0 -> no matching package found.
    - drupal/console 1.0.0-rc2 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc19 requires symfony/css-selector >=2.7 <3.0 -> no matching package found.
    - drupal/console 1.0.0-rc18 requires symfony/css-selector >=2.7 <3.0 -> no matching package found.
    - drupal/console 1.0.0-rc17 requires symfony/css-selector >=2.7 <3.0 -> no matching package found.
    - drupal/console 1.0.0-rc16 requires symfony/css-selector >=2.7 <3.0 -> no matching package found.
    - drupal/console 1.0.0-rc15 requires symfony/css-selector >=2.7 <3.0 -> no matching package found.
    - drupal/console 1.0.0-rc14 requires symfony/css-selector >=2.7 <3.2 -> no matching package found.
    - drupal/console 1.0.0-rc13 requires symfony/css-selector >=2.7 <3.2 -> no matching package found.
    - drupal/console 1.0.0-rc12 requires symfony/css-selector >=2.7 <3.2 -> no matching package found.
    - drupal/console 1.0.0-rc11 requires symfony/css-selector >=2.7 <3.2 -> no matching package found.
    - drupal/console 1.0.0-rc10 requires symfony/css-selector ~2.7|~2.8 -> no matching package found.
    - drupal/console 1.0.0-rc1 requires symfony/css-selector ~2.8 -> no matching package found.
    - drupal/console 1.0.0-beta5 requires symfony/config ~2.8 -> no matching package found.
    - drupal/console 1.0.0-beta4 requires symfony/config ~2.8 -> no matching package found.
    - drupal/console 1.0.0-beta3 requires symfony/config ~2.8 -> no matching package found.
    - drupal/console 1.0.0-beta2 requires symfony/config ~2.8 -> no matching package found.
    - drupal/console 1.0.0-beta1 requires symfony/config ~2.8 -> no matching package found.
    - drupal/console 1.0.0-alpha2 requires symfony/config ~2.8 -> no matching package found.
    - drupal/console 1.0.0-alpha1 requires symfony/config ~2.8 -> no matching package found.
    - drupal/console 1.9.4 requires drupal/console-core 1.9.4 -> satisfiable by drupal/console-core[1.9.4].
    - Conclusion: don't install drupal/console-core 1.9.4
    - drupal/console 1.9.3 requires drupal/console-core 1.9.3 -> satisfiable by drupal/console-core[1.9.3].
    - Conclusion: don't install drupal/console-core 1.9.3
    - drupal/console 1.9.2 requires drupal/console-core 1.9.2 -> satisfiable by drupal/console-core[1.9.2].
    - Conclusion: don't install drupal/console-core 1.9.2
    - drupal/console 1.9.1 requires drupal/console-core 1.9.1 -> satisfiable by drupal/console-core[1.9.1].
    - Conclusion: don't install drupal/console-core 1.9.1
    - drupal/console v1.9.0 requires drupal/console-core 1.9.0 -> satisfiable by drupal/console-core[v1.9.0].
    - Conclusion: don't install drupal/console-core v1.9.0
    - drupal/console 1.8.0 requires drupal/console-core 1.8.0 -> satisfiable by drupal/console-core[1.8.0].
    - Conclusion: don't install drupal/console-core 1.8.0
    - drupal/console 1.7.0 requires drupal/console-core 1.7.0 -> satisfiable by drupal/console-core[1.7.0].
    - Conclusion: don't install drupal/console-core 1.7.0
    - drupal/console 1.6.1 requires drupal/console-core 1.6.1 -> satisfiable by drupal/console-core[1.6.1].
    - Conclusion: don't install drupal/console-core 1.6.1
    - drupal/console 1.6.0 requires drupal/console-core 1.6.0 -> satisfiable by drupal/console-core[1.6.0].
    - Conclusion: don't install drupal/console-core 1.6.0
    - drupal/console 1.5.0 requires drupal/console-core 1.5.0 -> satisfiable by drupal/console-core[1.5.0].
    - Conclusion: don't install drupal/console-core 1.5.0
    - drupal/console 1.4.0 requires drupal/console-core 1.4.0 -> satisfiable by drupal/console-core[1.4.0].
    - Conclusion: don't install drupal/console-core 1.4.0
    - drupal/console 1.3.2 requires drupal/console-core 1.3.2 -> satisfiable by drupal/console-core[1.3.2].
    - Conclusion: don't install drupal/console-core 1.3.2
    - drupal/console 1.3.1 requires drupal/console-core 1.3.1 -> satisfiable by drupal/console-core[1.3.1].
    - Conclusion: don't install drupal/console-core 1.3.1
    - drupal/console 1.3.0 requires drupal/console-core 1.3.0 -> satisfiable by drupal/console-core[1.3.0].
    - Conclusion: don't install drupal/console-core 1.3.0
    - drupal/console 1.2.0 requires drupal/console-core 1.2.0 -> satisfiable by drupal/console-core[1.2.0].
    - Conclusion: don't install drupal/console-core 1.2.0
    - drupal/console 1.1.1 requires drupal/console-core 1.1.1 -> satisfiable by drupal/console-core[1.1.1].
    - Conclusion: don't install drupal/console-core 1.1.1
    - drupal/console 1.1.0 requires drupal/console-core 1.1.0 -> satisfiable by drupal/console-core[1.1.0].
    - Conclusion: don't install drupal/console-core 1.1.0
    - Installation request for symfony/finder (locked at v4.4.3) -> satisfiable by symfony/finder[v4.4.3].
    - drupal/console 1.0.2 requires drupal/console-core 1.0.2 -> satisfiable by drupal/console-core[1.0.2].
    - Conclusion: don't install drupal/console-core 1.0.2
    - Installation request for webflo/drupal-finder (locked at 1.2.0) -> satisfiable by webflo/drupal-finder[1.2.0].
    - drupal/console 1.0.1 requires drupal/console-core 1.0.1 -> satisfiable by drupal/console-core[1.0.1].
    - Conclusion: don't install drupal/console-core 1.0.1
    - drupal/console 1.0.0 requires drupal/console-core 1.0.0 -> satisfiable by drupal/console-core[1.0.0].
    - drupal/console 1.0.0-rc26 requires drupal/console-core 1.0.0-rc26 -> satisfiable by drupal/console-core[1.0.0-rc26].
    - drupal/console-core 1.0.0 requires webflo/drupal-finder ^0.3.0 -> satisfiable by webflo/drupal-finder[0.3.0].
    - drupal/console-core 1.0.0-rc26 requires webflo/drupal-finder ^0.3.0 -> satisfiable by webflo/drupal-finder[0.3.0].
    - Conclusion: don't install webflo/drupal-finder 0.3.0
    - Installation request for drupal/console ~1.0 -> satisfiable by drupal/console[1.0.0, 1.0.0-alpha1, 1.0.0-alpha2, 1.0.0-beta1, 1.0.0-beta2, 1.0.0-beta3, 1.0.0-beta4, 1.0.0-beta5, 1.0.0-rc1, 1.0.0-rc10, 1.0.0-rc11, 1.0.0-rc12, 1.0.0-rc13, 1.0.0-rc14, 1.0.0-rc15, 1.0.0-rc16, 1.0.0-rc17, 1.0.0-rc18, 1.0.0-rc19, 1.0.0-rc2, 1.0.0-rc20, 1.0.0-rc21, 1.0.0-rc22, 1.0.0-rc23, 1.0.0-rc24, 1.0.0-rc25, 1.0.0-rc26, 1.0.0-rc3, 1.0.0-rc4, 1.0.0-rc5, 1.0.0-rc6, 1.0.0-rc7, 1.0.0-rc8, 1.0.0-rc9, 1.0.1, 1.0.2, 1.1.0, 1.1.1, 1.2.0, 1.3.0, 1.3.1, 1.3.2, 1.4.0, 1.5.0, 1.6.0, 1.6.1, 1.7.0, 1.8.0, 1.9.1, 1.9.2, 1.9.3, 1.9.4, v1.9.0].

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.
 - It's a private package and you forgot to add a custom repository to find it

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.

Installation failed, reverting ./composer.json to its original content.

jmevalentin on 4 Apr 2020

@jmevalentin did you try the @nidash's way?

I solved it by adding "drupal/console": "~1.0" in the require section and running composer update - hope this helps.

phannphong on 4 Apr 2020

The following worked for me without having to delete the composer.lock file or anything from the vendor folder

composer require "symfony/dom-crawler:~2.8|~3.0" drupal/console --dev --prefer-dist --optimize-autoloader --update-with-all-dependencies

robert-duplock-adg on 17 Apr 2020

👍2

This issue has been driving me mad!

Had to delete composer.lock file from install dir - I just moved them into a spare folder I use to move files/folders I don't want to delete.
Had to delete vendor folder.
Add "drupal/console": "~1.0" in the require section of composer.json file.
composer update.
composer clear cache.
run following command as none of the others worked (thanks robert-duplock-adg):
$ composer require "symfony/dom-crawler:~2.8|~3.0" drupal/console --dev --prefer-dist --optimize-autoloader --update-with-all-dependencies
Finally flipping worked!

anjinesie on 17 Apr 2020

I tried that composer command in step 6, @anjinesie , but I get this:

Using version ^1.9 for drupal/console
./composer.json has been updated
Gathering patches for root package.
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - drupal/console 1.9.4 requires drupal/console-core 1.9.4 -> satisfiable by drupal/console-core[1.9.4].
    - Conclusion: don't install drupal/console-core 1.9.4
    - drupal/console 1.9.3 requires drupal/console-core 1.9.3 -> satisfiable by drupal/console-core[1.9.3].
    - Conclusion: don't install drupal/console-core 1.9.3
    - drupal/console 1.9.2 requires drupal/console-core 1.9.2 -> satisfiable by drupal/console-core[1.9.2].
    - Conclusion: don't install drupal/console-core 1.9.2
    - drupal/console 1.9.1 requires drupal/console-core 1.9.1 -> satisfiable by drupal/console-core[1.9.1].
    - Conclusion: don't install drupal/console-core 1.9.1
    - drupal/console v1.9.0 requires drupal/console-core 1.9.0 -> satisfiable by drupal/console-core[v1.9.0].
    - Conclusion: remove symfony/finder v4.4.3
    - Installation request for drupal/console ^1.9 -> satisfiable by drupal/console[1.9.1, 1.9.2, 1.9.3, 1.9.4, v1.9.0].
    - Conclusion: don't install symfony/finder v4.4.3
    - drupal/console-core v1.9.0 requires symfony/finder ~2.8|~3.0 -> satisfiable by symfony/finder[3.4.x-dev, v3.4.1, v3.4.10, v3.4.11, v3.4.12, v3.4.13, v3.4.14, v3.4.15, v3.4.16, v3.4.17, v3.4.18, v3.4.19, v3.4.2, v3.4.20, v3.4.21, v3.4.22, v3.4.23, v3.4.24, v3.4.25, v3.4.26, v3.4.27, v3.4.28, v3.4.29, v3.4.3, v3.4.30, v3.4.31, v3.4.32, v3.4.33, v3.4.34, v3.4.35, v3.4.36, v3.4.37, v3.4.38, v3.4.39, v3.4.4, v3.4.5, v3.4.6, v3.4.7, v3.4.8, v3.4.9].
    - Can only install one of: symfony/finder[3.4.x-dev, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.1, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.10, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.11, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.12, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.13, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.14, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.15, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.16, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.17, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.18, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.19, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.2, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.20, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.21, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.22, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.23, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.24, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.25, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.26, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.27, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.28, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.29, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.3, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.30, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.31, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.32, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.33, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.34, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.35, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.36, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.37, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.38, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.39, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.4, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.5, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.6, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.7, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.8, v4.4.3].
    - Can only install one of: symfony/finder[v3.4.9, v4.4.3].
    - Installation request for symfony/finder (locked at v4.4.3) -> satisfiable by symfony/finder[v4.4.3].


Installation failed, reverting ./composer.json to its original content.

jmevalentin on 18 Apr 2020

Hi @jmevalentin. I installed Drupal Console (DC) on an already installed drupal site (albeit more or less fresh - installed using 'composer...recommended project' - re-configured as I am on a shared hosting server - pain in the a£*e). Is your site already installed using 'composer...recommended project' or are you installing DC using 'composer create-project \drupal-composer/drupal-project:8.x-dev'?
Because of the shared hosting limitations using the public_html folder as the [web-root] instead of the already configured 'web' folder, I had to install DC to my site root [cpanel home folder] first using #6 after removing vendor folder and the composer.lock file from site root [cpanel home folder]. If your set up is similar (shared hosting) then I can let you know what I did to get everything working.

anjinesie on 18 Apr 2020

I am also using the drupal recommended template and drupal 8.8.5 as well, and I was running into the same issues. My recipe to work around this problem was slightly different:

delete composer.lock and vendor folder
composer self-update (to 1.10)
fin composer require drupal/console --prefer-dist --optimize-autoloader

batigolix on 1 May 2020

Is there a solution without deleting composer.lock ?

Flodevelop on 20 May 2020

https://docs.drupalconsole.com/en/getting/composer.html

Hi @ashabed the solution provided by @RishiKulshreshtha, @phannphong and @sphism is as is documented on https://docs.drupalconsole.com/en/getting/composer.html

Could you let me know how do you ended up with a different version in composer, maybe is outdated documentation that you find that we need to fix?

@enzolutions, this issue is not documented at the referenced address

spiritcapsule on 29 May 2020

also, attempting that solution downgraded symfony: Downgrading symfony/finder (v4.4.8 => v3.4.40): Loading from cache
I don't think that's what I want.

spiritcapsule on 29 May 2020

@spiritcapsule try this
add "drupal/console": "~1.0" to composer.json and run composer update --with-dependencies

acnimda on 29 May 2020

I am no expert but I have managed to set up drupal console successfully on three different sites using the following. You have to install drupal console DC inside your cPanel root folder and your web root ('public_html' or 'web')! This is what I was getting wrong!
You also need to delete/move the Vendor folder as this contains the conflicting Symfony files DC wil not install if you don't do this - but on a re-run of the install (below) this will correct to the latest version. I hope it helps you, please let me know how you get on.

I assuming you have installed Drupal -recommended project and Composer!!

I installed DC with this command using Composer into my cPanel root (aroot) FIRST e.g. my cPanel folder structure is: aroot/public_html/sites.
_1. Create a 'spare' dir inside aroot folder.

Move composer.lock file from aroot folder to spare folder (to keep just in case).
Move Vendor folder from aroot folder in to spare folder (to keep just in case).
Make sure "drupal/console": "~1.0" in the 'require' section of composer.json file which will look something like this!_

"require-dev": {
"drupal/console": "^1.9"
}

___5. Run_
composer update
_6. Run_
composer clear-cache

Install DrupalConsole into aroot folder using following command:_
composer require "symfony/dom-crawler:~2.8|~3.0" drupal/console --dev --prefer-dist --optimize-autoloader --update-with-all-dependencies_

_7a. Then re-run (in aroot folder) as (this seems to install the correct version of Symfony or something or other - not entirely sure what happens but when I omitted this step - I had a whole bunch of errors):_
composer require drupal/console --dev --prefer-dist --optimize-autoloader --update-with-all-dependencies

_8. Now install DrupalConsole into ~/public_html or ~/web [web-root] folder using command:_
composer require drupal/console --dev --prefer-dist --optimize-autoloader --update-with-all-dependencies

_9. Next install Launcher:_
php -r "readfile('https://drupalconsole.com/installer');" > drupal.phar

_8. Move drupal.phar to aroot directory and rename (substitute for your folder structure):_
mv drupal.phar home/aroot/drupal

_9. Change permissions for drupal.phar directory:_
chmod +x /home/aroot/drupal

_10. Go to aroot folder and check version of drupal console installed:_
composer show | grep drupal/console

_It will look something like this:_

[aroot@vps ~]$ composer show | grep drupal/console
drupal/console                                  1.9.4           The Drupal CLI. A tool to generate boile...
drupal/console-core                          1.9.4           Drupal Console Core
drupal/console-en                             1.9.4           Drupal Console English Language
drupal/console-extend-plugin           0.9.3           Drupal Console Extend Plugin

_11. If its all installed properly then you can delete the spare folder._

anjinesie on 29 May 2020

Is it possible to require and update only this one dependency via composers require drupal/console, or do I need to add it manually and run an update on it? I ask because the site I'm working on appears to be screwed up, and just running composer update right now will bring it down. Whoever created this site screwed it up something royally, so we're having to figure out stuff manually. In the meantime, I'm missing out on Drupal console.

jmevalentin on 29 May 2020

Is DC installed in the cPanel root and the webroot? Drupal Console seems to only want to install with a specific version of symfony! I found that's why i was getting errors!

anjinesie on 29 May 2020

@acnimda I did exactly that and as stated previously ended with Symfony 3. I had Symfony 4 before attempting to add Console.

spiritcapsule on 29 May 2020

@acnimda I did exactly that and as stated previously ended with Symfony 3. I had Symfony 4 before attempting to add Console.

Could you get full throttle of the Drupal Console? If you can run drupal it would be more than delightful.

Composer is a great dependencies manager and will do the work for you. I don't have an answer why there is in your situation a downgrade.

You don't have to delete composer.lock or what so ever.

I use it a lot on a windows host, with docker and DDEV and never really had any issues with Drupal Console.

acnimda on 29 May 2020

Is there a solution without deleting composer.lock ?

I agree with this.
Its actually works with vendor/.lock deletion and composer update,
BUT in a context of automatic deployment and continuous integration we simply can't remove composer.lock and change vendor versions in different environments.
We must keep the same composer.json and lock.