Как выяснить мои «требования или минимальная стабильность»? удовлетворить зависимость компилятора установить?

Я использую PHP 7. Я хочу установить компоненты, необходимые для запуска кода здесь — https://github.com/Bit-Wasp/stratum-php . Я хочу сделать клиентские подключения к пулу страты. Мне не ясно, какие именно компоненты мне нужно сделать, поэтому я решил установить их все, но я получаю некоторые ошибки

localhost:stratum-php-master davea$ composer require bitwasp/bitcoin bitwasp/bitcoin-lib bitwasp/bitcoin-node bitwasp/bitcoin-p2p bitwasp/buffertools bitwasp/commonblockchain bitwasp/secp256k1-php bitwasp/stratum bitwasp/testing-php bitwasp/thread
Using version v0.0.34.2 for bitwasp/bitcoin
Using version ^1.2 for bitwasp/bitcoin-lib
Using version ^0.0.2 for bitwasp/bitcoin-node
Using version ^0.0.17 for bitwasp/bitcoin-p2p
Using version ^0.5.0 for bitwasp/buffertools
Using version ^1.0 for bitwasp/commonblockchain
Using version ^0.1.2 for bitwasp/secp256k1-php
Using version ^0.3.0 for bitwasp/stratum
Using version ^0.1.1 for bitwasp/testing-php
Using version ^0.0.1 for bitwasp/thread
./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
- The requested package bitwasp/stratum No version set (parsed as 1.0.0) is satisfiable by bitwasp/stratum[No version set (parsed as 1.0.0)] but these conflict with your requirements or minimum-stability.
Problem 2
- Installation request for bitwasp/bitcoin v0.0.34.2 -> satisfiable by bitwasp/bitcoin[v0.0.34.2].
- bitwasp/bitcoin v0.0.34.2 requires bitwasp/buffertools ^0.4.0 -> satisfiable by bitwasp/buffertools[0.4.x-dev, v0.4.0, v0.4.1] but these conflict with your requirements or minimum-stability.
Problem 3
- Installation request for bitwasp/bitcoin-node ^0.0.2 -> satisfiable by bitwasp/bitcoin-node[v0.0.2].
- bitwasp/bitcoin-node v0.0.2 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
Problem 4
- Installation request for bitwasp/bitcoin-p2p ^0.0.17 -> satisfiable by bitwasp/bitcoin-p2p[v0.0.17].
- bitwasp/bitcoin-p2p v0.0.17 requires bitwasp/bitcoin ~0.0.33.1 -> satisfiable by bitwasp/bitcoin[0.0.33.x-dev, v0.0.33.1, v0.0.33.2, v0.0.33.3] but these conflict with your requirements or minimum-stability.
Problem 5
- bitwasp/bitcoin-lib v1.2.3 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- bitwasp/bitcoin-lib v1.2.2 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- bitwasp/bitcoin-lib v1.2.1 requires mdanter/ecc dev-master#89640a0873e212a723212e7f374f973b7d1fe6f6 -> satisfiable by mdanter/ecc[dev-master] but these conflict with your requirements or minimum-stability.
- bitwasp/bitcoin-lib 1.2.0 requires mdanter/ecc dev-master#89640a0873e212a723212e7f374f973b7d1fe6f6 -> satisfiable by mdanter/ecc[dev-master] but these conflict with your requirements or minimum-stability.
- Installation request for bitwasp/bitcoin-lib ^1.2 -> satisfiable by bitwasp/bitcoin-lib[1.2.0, v1.2.1, v1.2.2, v1.2.3].Installation failed, reverting ./composer.json to its original content.

Глядя на первую ошибку,

The requested package bitwasp/stratum No version set (parsed as 1.0.0) is satisfiable by bitwasp/stratum[No version set (parsed as 1.0.0)] but these conflict with your requirements or minimum-stability.

Как мне определить / указать версию, на которую жалуется ошибка?

редактировать Когда я указал рекомендованную версию и перезапустил команду, я получил эти ошибки …

localhost:stratum-php-master davea$ composer require bitwasp/bitcoin bitwasp/bitcoin-lib bitwasp/bitcoin-node bitwasp/bitcoin-p2p bitwasp/buffertools:0.4.0 bitwasp/commonblockchain bitwasp/secp256k1-php bitwasp/stratum bitwasp/testing-php bitwasp/thread
Using version v0.0.34.2 for bitwasp/bitcoin
Using version ^1.2 for bitwasp/bitcoin-lib
Using version ^0.0.2 for bitwasp/bitcoin-node
Using version ^0.0.17 for bitwasp/bitcoin-p2p
Using version ^1.0 for bitwasp/commonblockchain
Using version ^0.1.2 for bitwasp/secp256k1-php
Using version ^0.3.0 for bitwasp/stratum
Using version ^0.1.1 for bitwasp/testing-php
Using version ^0.0.1 for bitwasp/thread
./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
- The requested package bitwasp/stratum 1.0.0 is satisfiable by bitwasp/stratum[1.0.0] but these conflict with your requirements or minimum-stability.
Problem 2
- Installation request for bitwasp/bitcoin v0.0.34.2 -> satisfiable by bitwasp/bitcoin[v0.0.34.2].
- bitwasp/bitcoin v0.0.34.2 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
Problem 3
- Installation request for bitwasp/bitcoin-node ^0.0.2 -> satisfiable by bitwasp/bitcoin-node[v0.0.2].
- bitwasp/bitcoin-node v0.0.2 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
Problem 4
- Installation request for bitwasp/bitcoin-p2p ^0.0.17 -> satisfiable by bitwasp/bitcoin-p2p[v0.0.17].
- bitwasp/bitcoin-p2p v0.0.17 requires bitwasp/bitcoin ~0.0.33.1 -> satisfiable by bitwasp/bitcoin[0.0.33.x-dev, v0.0.33.1, v0.0.33.2, v0.0.33.3] but these conflict with your requirements or minimum-stability.
Problem 5
- mdanter/ecc v0.5.0 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- mdanter/ecc v0.4.5 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- mdanter/ecc v0.4.4 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- mdanter/ecc v0.4.3 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- mdanter/ecc v0.4.2 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- mdanter/ecc v0.4.1 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- mdanter/ecc v0.4.0 requires ext-gmp * -> the requested PHP extension gmp is missing from your system.
- bitwasp/buffertools v0.4.0 requires mdanter/ecc ~0.4 -> satisfiable by mdanter/ecc[v0.4.0, v0.4.1, v0.4.2, v0.4.3, v0.4.4, v0.4.5, v0.5.0].
- Installation request for bitwasp/buffertools 0.4.0 -> satisfiable by bitwasp/buffertools[v0.4.0].Installation failed, reverting ./composer.json to its original content.