Put Julia directly in the Pixi environment (#1017)

* Put Julia directly in the Pixi environment

https://prefix.dev/channels/julia-forge/packages/julia

* Don't assume juliaup in VSCode

* Pin Julia to the julia-forge channel

Prevent future lockfile updates from selecting a Julia package from another configured channel.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: visr

.github/workflows/CI.yml

@@ -33,8 +33,6 @@ jobs:
       - uses: prefix-dev/setup-pixi@a09b6247153796b190642a2b53fac4241043cf6f # v0.10.0
         with:
           pixi-version: "latest"
-      - name: Prepare pixi
-        run: pixi run install-julia
       - name: Test Wflow
         run: |
           pixi run test-wflow-cov

.github/workflows/CIWflowServer.yml

@@ -30,8 +30,6 @@ jobs:
       - uses: prefix-dev/setup-pixi@a09b6247153796b190642a2b53fac4241043cf6f # v0.10.0
         with:
           pixi-version: "latest"
-      - name: Prepare pixi
-        run: pixi run install-julia
       - name: Test WflowServer
         run: |
           pixi run test-wflow-server

.github/workflows/julia-auto-update.yml

@@ -17,7 +17,6 @@ jobs:
           pixi-version: "latest"
       - name: Update Julia manifest
         run: |
-          pixi run install-julia
           pixi run update-registry-julia
           pixi run update-manifest-julia
         env:

.github/workflows/parameter_metadata_json_gen.yml

@@ -15,8 +15,6 @@ jobs:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: julia-actions/cache@a45e8fa8be21c18a06b7177052533149e61e9b38 # v3.1.0
       - uses: prefix-dev/setup-pixi@a09b6247153796b190642a2b53fac4241043cf6f # v0.10.0
-      - name: prepare pixi
-        run: pixi run install-julia
       - name: Test parameter metadata JSON generation
         run: pixi run parameter_metadata_json_gen
       - name: Ensure that there was no change in the metadata

.github/workflows/update-sbom.yml

@@ -18,9 +18,7 @@ jobs:
         with:
           pixi-version: "latest"
       - name: Install Julia and update SBOM file
-        run: |
-          pixi run install-julia
-          pixi run generate-sbom
+        run: pixi run generate-sbom
         env:
           JULIA_PKG_PRECOMPILE_AUTO: "0"
       - uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1

.vscode/settings.json

@@ -13,6 +13,5 @@
     },
     "[markdown]": {
         "rewrap.wordWrapColumn": 92
-    },
-    "julia.executablePath": "julia +1.12.6"
+    }
 }

pixi.lock

@@ -6,12 +6,14 @@ authors = [
 	"Hofer-Julian <julian.hofer@deltares.nl>",
 	"Bart de Koning <bart.dekoning@deltares.nl>",
 ]
-channels = ["conda-forge"]
+channels = ["conda-forge", "https://prefix.dev/julia-forge"]
 platforms = ["win-64", "linux-64"]
 
 [tasks]
 # Installation
 # Julia
+# Note: this is for developers to have their global julia use the right version.
+# Use `pixi run julia` for the package used by CI.
 install-julia = "juliaup add 1.12.6 && juliaup override set 1.12.6"
 # Prek
 install-prek = "prek install --overwrite"
@@ -58,7 +60,7 @@ test-wflow-server = { cmd = "julia --project=server --eval 'using Pkg; Pkg.test(
 instantiate-formatting = { cmd = "julia --project=utils/formatting --eval 'using Pkg; Pkg.instantiate(); using JuliaFormatter'" }
 format-code = { cmd = "julia --project=utils/formatting --eval 'using JuliaFormatter; format(isempty(ARGS) ? \".\" : ARGS) || exit(1)'" }
 # Docs
-install-ci = { depends-on = ["install-julia", "update-registry-julia"] }
+install-ci = { depends-on = ["update-registry-julia"] }
 quarto-check = { cmd = "quarto check all" }
 quarto-render = { cmd = "julia --project=docs --eval 'using Pkg; Pkg.build(\"IJulia\")' && quarto render docs --to html --execute" }
 quarto-preview = { cmd = "quarto preview docs" }
@@ -76,7 +78,7 @@ inputs = ["Manifest.toml"]
 outputs = ["Wflow.spdx.json"]
 
 [dependencies]
-juliaup = "*"
+julia = { version = "==1.12.6", channel = "https://prefix.dev/julia-forge" }
 python = ">=3.10"
 jupyter = ">=1.1.1,<2"
 quarto = ">=1.8.26,<2"