Add pixi update --json

[pavelzw]

Problem description

#73 (comment)

I would like to create an internal dependabot replacement that calls pixi update and generates some markdown diffs. I planned to make the json-to-md renderer open source after that :)
I don't think it would make sense to let pixi create markdown directly since eventual dependabot/renovate config will probably do their own implementation.

[baszalmstra]

What would you like to output of this command to look like?

[pavelzw]

{
  "py38": {
    "linux-64": {
      "python": {
        "before": {
          "version": "3.9.0",
          "build": "h12debd9_0"
        },
        "after": {
          "version": "3.9.0",
          "build": "h12debd9_0"
        },
        "changed": "no" // one of no, build, major, minor, patch, added, removed
        // if added or removed, the before or after are null
      },
      "polars": {
        "before": {
          "version": "0.10.0",
          "build": "py38h1f7f2b9_0"
        },
        "after": {
          "version": "0.10.1",
          "build": "py38h1faeeb9_1"
        },
        "changed": "patch"
      }
...

how about something like this?

[baszalmstra]

Seems simple enough!

Just the changed is a bit more complex. Not all versions are semver based and both the version and the build number can be changed at the same time. Do you really need this field?

[pavelzw]

I would also be fine with no, added, removed, newer, older, changed or no, added, removed, changed and i would do the version magic with a custom tool.

[baszalmstra]

But wouldnt this already be present from the fact that "before" and "after" exist or not?

• added - only "after"
• removed - only "before"
• changed - "after" and "before"
• no - package not present? Or neither and "after" or a "before"

[pavelzw]

yes, that's a bit smarter than my idea 😅 then let's not include changed at all

[pavelzw]

we probably also need to add pypi dependencies there:

{
  "py38": {
    "linux-64": {
      "python": {
        "before": {
          "version": "3.9.0",
          "build": "h12debd9_0"
        },
        "after": {
          "version": "3.9.0",
          "build": "h12debd9_0"
        },
        "type": "conda"
      },
      "polars": {
        "before": {
          "version": "0.10.0"
        },
        "after": {
          "version": "0.10.1"
        },
        "type": "pypi"
      }
...

how about this?

[baszalmstra]

Sure thing!

[pavelzw]

Almost done with the markdown generator 🤩
One other thing I would love to have: an indicator whether the dependency is explicit (i.e. defined in our pixi.toml) or not.

{
  "py38": {
    "linux-64": {
      "python": {
        "before": {
          "version": "3.9.0",
          "build": "h12debd9_0"
        },
        "after": {
          "version": "3.9.0",
          "build": "h12debd9_0"
        },
        "type": "conda",
        "explicit": true
      },
      "polars": {
        "before": {
          "version": "0.10.0"
        },
        "after": {
          "version": "0.10.1"
        },
        "type": "pypi",
        "explicit": false
      }
...