Remove Python2 dependencies

[SummerSeaSun]

I've running latest raspberry pi os, installed nodered by apt, then found that is needed Python2.

Linux pi 5.4.83-v7+ node-red/node-red#1379 SMP Mon Dec 14 13:08:57 GMT 2020 armv7l GNU/Linux

This are the packages that requires python2:

  libbrotli1 libc-ares2 libjs-inherits libjs-is-typedarray libnode-dev libnode64 libpython-stdlib libpython2-stdlib libpython2.7-minimal libpython2.7-stdlib libssl-dev libuv1 libuv1-dev node-abbrev
  node-ajv node-ansi node-ansi-align node-ansi-regex node-ansi-styles node-ansistyles node-aproba node-archy node-are-we-there-yet node-asn1 node-assert-plus node-asynckit node-aws-sign2 node-aws4
  node-balanced-match node-bcrypt-pbkdf node-bluebird node-boxen node-brace-expansion node-builtin-modules node-builtins node-cacache node-call-limit node-camelcase node-caseless node-chalk
  node-chownr node-cli-boxes node-cliui node-clone node-co node-color-convert node-color-name node-combined-stream node-concat-map node-concat-stream node-config-chain node-console-control-strings
  node-copy-concurrently node-core-util-is node-cross-spawn node-cyclist node-dashdash node-decamelize node-decompress-response node-deep-extend node-defaults node-delayed-stream node-delegates
  node-detect-indent node-detect-newline node-duplexer3 node-duplexify node-ecc-jsbn node-editor node-encoding node-end-of-stream node-errno node-escape-string-regexp node-execa node-extend
  node-extsprintf node-find-up node-flush-write-stream node-forever-agent node-form-data node-from2 node-fs-vacuum node-fs-write-stream-atomic node-fs.realpath node-gauge node-get-caller-file
  node-get-stream node-getpass node-glob node-got node-graceful-fs node-har-schema node-har-validator node-has-flag node-has-symbol-support-x node-has-to-string-tag-x node-has-unicode
  node-hosted-git-info node-http-signature node-iconv-lite node-iferr node-import-lazy node-imurmurhash node-inflight node-inherits node-ini node-invert-kv node-is-builtin-module node-is-npm
  node-is-object node-is-plain-obj node-is-retry-allowed node-is-stream node-is-typedarray node-isarray node-isexe node-isstream node-isurl node-jsbn node-json-parse-better-errors node-json-schema
  node-json-stable-stringify node-json-stringify-safe node-jsonify node-jsonparse node-jsonstream node-jsprim node-latest-version node-lazy-property node-lcid node-libnpx node-locate-path
  node-lockfile node-lowercase-keys node-lru-cache node-mem node-mime-types node-mimic-fn node-mimic-response node-minimatch node-minimist node-mississippi node-mkdirp node-move-concurrently
  node-mute-stream node-node-uuid node-nopt node-normalize-package-data node-npm-package-arg node-npm-run-path node-npmlog node-oauth-sign node-object-assign node-once node-opener node-os-locale
  node-osenv node-p-cancelable node-p-finally node-p-limit node-p-locate node-p-timeout node-package-json node-parallel-transform node-path-exists node-path-is-absolute node-path-is-inside
  node-performance-now node-prepend-http node-process-nextick-args node-promise-inflight node-promzard node-proto-list node-prr node-pump node-pumpify node-punycode node-qs node-qw node-rc node-read
  node-read-package-json node-readable-stream node-registry-auth-token node-registry-url node-request node-require-directory node-require-main-filename node-resolve-from node-retry node-rimraf
  node-run-queue node-safe-buffer node-semver node-semver-diff node-set-blocking node-sha node-shebang-command node-shebang-regex node-signal-exit node-slash node-slide node-sorted-object
  node-spdx-correct node-spdx-expression-parse node-spdx-license-ids node-sshpk node-ssri node-stream-each node-stream-iterate node-stream-shift node-string-decoder node-string-width node-strip-ansi
  node-strip-eof node-strip-json-comments node-supports-color node-tar node-term-size node-text-table node-through node-through2 node-timed-out node-tough-cookie node-tunnel-agent node-tweetnacl
  node-typedarray node-uid-number node-unique-filename node-unpipe node-url-parse-lax node-url-to-options node-util-deprecate node-uuid node-validate-npm-package-license
  node-validate-npm-package-name node-verror node-wcwidth.js node-which node-which-module node-wide-align node-widest-line node-wrap-ansi node-wrappy node-write-file-atomic node-xdg-basedir
  node-xtend node-y18n node-yallist node-yargs node-yargs-parser nodejs python-minimal python2-minimal python2.7 python2.7-minimal

Python 2 should be or replaced by 3 https://pythonclock.org/

[knolleary]

Moving this over to the linux installs repository.

[dceejay]

that is a Debian issue.

Use our command-line installer instead as per the docs and it should remove all the apt installed nodejs. see https://nodered.org/docs/getting-started/raspberrypi

[SummerSeaSun]

Thank you, I've tried the script it seems it leave the system as it is. I needed to remove the python2 then run it again.

Running Node-RED install for user pi at /home/pi on raspbian

This can take 20-30 minutes on the slower Pi versions - please wait. Stop Node-RED ✔ Remove old version of Node-RED ✔ Remove old version of Node.js - Leave existing Node.js - Node v10.23.1 Npm 5.8.0 Clean npm cache - npm WARN npm npm does not support Node.js v10.23.1 npm WARN npm You should probably upgrade to a newer version of node as we npm WARN npm can't make any promises that npm will work with this version. npm WARN npm Supported releases of Node.js are the latest release of 4, 6, 7, 8, 9. npm WARN npm You can find the latest version at https://nodejs.org/ Install Node-RED core ✔ 1.2.7 npm WARN npm npm does not support Node.js v10.23.1 npm WARN npm You should probably upgrade to a newer version of node as we npm WARN npm can't make any promises that npm will work with this version. npm WARN npm Supported releases of Node.js are the latest release of 4, 6, 7, 8, 9. npm WARN npm You can find the latest version at https://nodejs.org/ Move global nodes to local ✔ Install extra Pi nodes ✔ Npm rebuild existing nodes - Add shortcut commands ✔ Update systemd script ✔

All done. You can now start Node-RED with the command node-red-start or using the icon under Menu / Programming / Node-RED

then: apt remove python2

then:

This can take 20-30 minutes on the slower Pi versions - please wait.

Stop Node-RED ✔ Remove old version of Node-RED ✔ Remove old version of Node.js ✔ Install Node.js LTS ✔ Node v12.20.1 Npm 6.14.10 Clean npm cache ✔ Install Node-RED core ✔ 1.2.7 Move global nodes to local - Install extra Pi nodes ✔ Npm rebuild existing nodes ✔ Add shortcut commands ✔ Update systemd script ✔

All done. You can now start Node-RED with the command node-red-start or using the icon under Menu / Programming / Node-RED

[dceejay]

we don't specifically remove python2 - we should remove all those node.js packages some of which pre-req python2 .

[dceejay]

Time has moved on ... bullseye version of raspios now only has python3 etc