OpenSourceAWE · 1-Bart-1 · Jul 13, 2026 · Jul 13, 2026 · Jul 13, 2026 · Jul 13, 2026
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
@@ -45,6 +45,11 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
+      - name: Install display dependencies for GLMakie
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y xvfb libgl1-mesa-dri
       - uses: actions/cache@v5
         env:
           cache-name: cache-artifacts
@@ -61,6 +66,7 @@ jobs:
           BUILD_IS_PRODUCTION_BUILD: ${{ matrix.build_is_production_build }}
         with:
           coverage: false
+          prefix: ${{ runner.os == 'Linux' && 'xvfb-run -a' || '' }}
   test-with-code-coverage:
     name: Julia ${{ matrix.julia_version }} - ${{ matrix.os }} - ${{ matrix.julia_arch }} - with code coverage
     timeout-minutes: 30
@@ -81,11 +87,17 @@ jobs:
       with:
         arch: ${{ matrix.julia_arch }}
         version: ${{ matrix.julia_version }}
+    - name: Install display dependencies for GLMakie
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y xvfb libgl1-mesa-dri
     - uses: julia-actions/cache@v2
     - uses: julia-actions/julia-buildpkg@v1
     - uses: julia-actions/julia-runtest@v1
       env:
         BUILD_IS_PRODUCTION_BUILD: false
+      with:
+        prefix: xvfb-run -a
     - uses: julia-actions/julia-processcoverage@v1
     - uses: codecov/codecov-action@v6
       with:
@@ -101,7 +113,14 @@ jobs:
       - uses: julia-actions/setup-julia@v3
       - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@v1
-
+
+      - name: Start virtual display for GLMakie
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y xvfb libgl1-mesa-dri
+          Xvfb :99 -screen 0 1024x768x24 &
+          echo "DISPLAY=:99" >> "$GITHUB_ENV"
+
       - uses: julia-actions/julia-docdeploy@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

diff --git a/.github/workflows/setup-test.yml b/.github/workflows/setup-test.yml
@@ -20,6 +20,6 @@ jobs:
           version: '1'
       - uses: julia-actions/cache@v2
       - name: Install xvfb for headless GLMakie
-        run: sudo apt-get update && sudo apt-get install -y xvfb
+        run: sudo apt-get update && sudo apt-get install -y xvfb libgl1-mesa-dri
       - name: Run setup tests
         run: bash test/test_setup.sh
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -35,6 +35,9 @@
   instead of the old `ObjWing` pipeline (XFoil + single `.dat` file);
   `ObjWing` is kept as a shim that accepts but ignores `dat_path`
 - `Section` and `add_section!` accept an optional `cp_data` argument
+- plotting is now Makie-only; the `VortexStepMethodMakieExt` extension loads once a
+  Makie backend and [`MakieControlPlots`](https://github.com/OpenSourceAWE/MakieControlPlots.jl)
+  are available, and `plot_section_polars` is rendered through `MakieControlPlots`
 
 ### Removed
 - `ObjWing` as a standalone pipeline (replaced by `ObjAdapter`); the name is
@@ -43,6 +46,11 @@
 - `PanelGroupingMethod` enum (already removed in v3.0.0 — stale docs entry cleaned up)
 - ControlPlots test run removed from CI (`plot-controlplots` arg) due to
   a `libraqm`/HarfBuzz symbol conflict in the GitHub Actions environment
+- the `ControlPlots` plotting extension, `examples_cp/`, and the `PythonCall`/Matplotlib
+  setup (`bin/install_controlplots`, CondaPkg `LocalPreferences` defaults)
+- the `PlotBackend`/`MakieBackend`/`ControlPlotsBackend` types and `set_plot_backend!`;
+  plotting works as soon as a Makie backend and `MakieControlPlots` are loaded
+- the never-implemented `plot_circulation_distribution`
 
 ## VortexStepMethod v3.3.6 2026-06-13
 

diff --git a/Manifest-v1.11.toml.default b/Manifest-v1.11.toml.default
@@ -2,7 +2,7 @@
 
 julia_version = "1.11.9"
 manifest_format = "2.0"
-project_hash = "05293bd6fd6fa250061021968d5e2c89f35da00a"
+project_hash = "6d819b6b32f1312b2d31d1cba26887098fe3abd1"
 
 [[deps.ADTypes]]
 git-tree-sha1 = "ec6be48a85c93d995563b84bff8a86bc98df45ce"

diff --git a/Manifest-v1.12.toml.default b/Manifest-v1.12.toml.default
@@ -2,7 +2,7 @@
 
 julia_version = "1.12.6"
 manifest_format = "2.0"
-project_hash = "d83aedaeaccf6702392f905f22f5c353214715d9"
+project_hash = "30adb65bf2e48d1c0cd0a19da51c375ecdec07ec"
 
 [[deps.ADTypes]]
 git-tree-sha1 = "ec6be48a85c93d995563b84bff8a86bc98df45ce"
@@ -358,18 +358,6 @@ git-tree-sha1 = "21d088c496ea22914fe80906eb5bce65755e5ec8"
 uuid = "f0e56b4a-5159-44fe-b623-3e5288b988bb"
 version = "2.5.1"
 
-[[deps.Conda]]
-deps = ["Downloads", "JSON", "VersionParsing"]
-git-tree-sha1 = "8f06b0cfa4c514c7b9546756dbae91fcfbc92dc9"
-uuid = "8f4d0f93-b110-5947-807f-2305c1781a2d"
-version = "1.10.3"
-
-[[deps.CondaPkg]]
-deps = ["JSON", "Markdown", "MicroMamba", "Pidfile", "Pkg", "Preferences", "Scratch", "TOML", "pixi_jll"]
-git-tree-sha1 = "2b1afb8ae65a0758795b00adafb37f97e67ef0e9"
-uuid = "992eb4ea-22a4-4c89-a5bb-47a3300528ab"
-version = "0.2.36"
-
 [[deps.ConstructionBase]]
 git-tree-sha1 = "b4b092499347b18a015186eae3042f72267106cb"
 uuid = "187b0558-2788-49d3-abe0-74a17ed4e7c9"
@@ -386,18 +374,6 @@ git-tree-sha1 = "439e35b0b36e2e5881738abc8857bd92ad6ff9a8"
 uuid = "d38c429a-6771-53c6-b99e-75d170b6e991"
 version = "0.6.3"
 
-[[deps.ControlPlots]]
-deps = ["JLD2", "LaTeXStrings", "Pkg", "Printf", "PyPlot", "StaticArraysCore"]
-git-tree-sha1 = "fb1cf8d1213c9f2908f8682f58f7ec252f6cc171"
-uuid = "23c2ee80-7a9e-4350-b264-8e670f12517c"
-version = "0.2.15"
-
-    [deps.ControlPlots.extensions]
-    ControlPlotsExt = "ControlSystemsBase"
-
-    [deps.ControlPlots.weakdeps]
-    ControlSystemsBase = "aaaaaaaa-a6ca-5380-bf3e-84a91bcd477e"
-
 [[deps.CoreMath]]
 deps = ["CoreMath_jll"]
 git-tree-sha1 = "8c0480f92b1b1796239156a1b9b1bfb1b39499b4"
@@ -1409,6 +1385,18 @@ version = "0.24.10"
     [deps.Makie.weakdeps]
     DynamicQuantities = "06fc5a27-2a28-4c7c-a15d-362465fb6821"
 
+[[deps.MakieControlPlots]]
+deps = ["CairoMakie", "GLMakie", "GridLayoutBase", "JLD2", "LaTeXStrings", "Makie", "Pkg", "PrecompileTools", "Printf", "StaticArraysCore"]
+git-tree-sha1 = "3f5e12bb0d1cd071758cd0c2a9058ddf3d2a6a31"
+uuid = "6d616b69-6563-4f6e-8472-6f6c706c6f74"
+version = "0.1.7"
+
+    [deps.MakieControlPlots.extensions]
+    MakieControlPlotsControlSystemsBaseExt = "ControlSystemsBase"
+
+    [deps.MakieControlPlots.weakdeps]
+    ControlSystemsBase = "aaaaaaaa-a6ca-5380-bf3e-84a91bcd477e"
+
 [[deps.MappedArrays]]
 git-tree-sha1 = "0ee4497a4e80dbd29c058fcee6493f5219556f40"
 uuid = "dbb5928d-eab1-5f90-85c2-b9b0edb7c900"
@@ -1464,12 +1452,6 @@ git-tree-sha1 = "c009236e222df68e554c7ce5c720e4a33cc0c23f"
 uuid = "7269a6da-0436-5bbc-96c2-40638cbb6118"
 version = "0.5.3"
 
-[[deps.MicroMamba]]
-deps = ["Pkg", "Scratch", "micromamba_jll"]
-git-tree-sha1 = "535656ce55266bfed0575cd051acc4f36dc869a0"
-uuid = "0b3b1443-0f03-428d-bdfb-f27f9c1191ea"
-version = "0.1.15"
-
 [[deps.Missings]]
 deps = ["DataAPI"]
 git-tree-sha1 = "ec4f7fbeab05d7747bdf98eb74d130a2a2ed298d"
@@ -1748,12 +1730,6 @@ git-tree-sha1 = "32a4e09c5f29402573d673901778a0e03b0807b9"
 uuid = "69de0a69-1ddd-5017-9359-2bf0b02dc9f0"
 version = "2.8.6"
 
-[[deps.Pidfile]]
-deps = ["FileWatching", "Test"]
-git-tree-sha1 = "2d8aaf8ee10df53d0dfb9b8ee44ae7c04ced2b03"
-uuid = "fa939f87-e72e-5be4-a000-7fc836dbe307"
-version = "1.3.0"
-
 [[deps.Pixman_jll]]
 deps = ["Artifacts", "CompilerSupportLibraries_jll", "JLLWrappers", "LLVMOpenMP_jll", "Libdl"]
 git-tree-sha1 = "e4a6721aa89e62e5d4217c0b21bd714263779dda"
@@ -1873,32 +1849,6 @@ weakdeps = ["ForwardDiff"]
     [deps.PureKLU.extensions]
     PureKLUForwardDiffExt = "ForwardDiff"
 
-[[deps.PyCall]]
-deps = ["Conda", "Dates", "Libdl", "LinearAlgebra", "MacroTools", "Serialization", "VersionParsing"]
-git-tree-sha1 = "9816a3826b0ebf49ab4926e2b18842ad8b5c8f04"
-uuid = "438e738f-606a-5dbb-bf0a-cddfbfd45ab0"
-version = "1.96.4"
-
-[[deps.PyPlot]]
-deps = ["Colors", "LaTeXStrings", "PyCall", "Sockets", "Test", "VersionParsing"]
-git-tree-sha1 = "d2c2b8627bbada1ba00af2951946fb8ce6012c05"
-uuid = "d330b81b-6aea-500a-939a-2ce795aea3ee"
-version = "2.11.6"
-
-[[deps.PythonCall]]
-deps = ["CondaPkg", "Dates", "Libdl", "MacroTools", "Markdown", "Preferences", "Serialization", "Tables", "UnsafePointers"]
-git-tree-sha1 = "2b67e030054dd9438a00e3d7f59927e839b00569"
-uuid = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
-version = "0.9.35"
-
-    [deps.PythonCall.extensions]
-    CategoricalArraysExt = "CategoricalArrays"
-    PyCallExt = "PyCall"
-
-    [deps.PythonCall.weakdeps]
-    CategoricalArrays = "324d7699-5711-5eae-9e2f-1d82baa6b597"
-    PyCall = "438e738f-606a-5dbb-bf0a-cddfbfd45ab0"
-
 [[deps.QOI]]
 deps = ["ColorTypes", "FileIO", "FixedPointNumbers"]
 git-tree-sha1 = "472daaa816895cb7aee81658d4e7aec901fa1106"
@@ -2536,26 +2486,15 @@ version = "1.28.0"
     NaNMath = "77ba4419-2d1f-58cd-9bb1-8ffee604a2e3"
     Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 
-[[deps.UnsafePointers]]
-git-tree-sha1 = "c81331b3b2e60a982be57c046ec91f599ede674a"
-uuid = "e17b2a0c-0bdf-430a-bd0c-3a23cae4ff39"
-version = "1.0.0"
-
-[[deps.VersionParsing]]
-git-tree-sha1 = "58d6e80b4ee071f5efd07fda82cb9fbe17200868"
-uuid = "81def892-9a0e-5fdd-b105-ffc91e053289"
-version = "1.3.0"
-
 [[deps.VortexStepMethod]]
 deps = ["Colors", "DefaultApplication", "DelimitedFiles", "DifferentiationInterface", "FiniteDiff", "ForwardDiff", "Interpolations", "LaTeXStrings", "LinearAlgebra", "Logging", "Measures", "NPZ", "NonlinearSolve", "Parameters", "Pkg", "PreallocationTools", "PrecompileTools", "Printf", "RecursiveArrayTools", "SciMLBase", "Serialization", "StaticArrays", "Statistics", "StructMapping", "Timers", "Xfoil", "YAML"]
 path = "."
 uuid = "ed3cd733-9f0f-46a9-93e0-89b8d4998dd9"
 version = "3.3.6"
-weakdeps = ["ControlPlots", "Makie", "PythonCall"]
+weakdeps = ["Makie", "MakieControlPlots"]
 
     [deps.VortexStepMethod.extensions]
-    VortexStepMethodControlPlotsExt = ["ControlPlots", "PythonCall"]
-    VortexStepMethodMakieExt = "Makie"
+    VortexStepMethodMakieExt = ["Makie", "MakieControlPlots"]
 
 [[deps.Wayland_jll]]
 deps = ["Artifacts", "EpollShim_jll", "Expat_jll", "JLLWrappers", "Libdl", "Libffi_jll"]
@@ -2788,12 +2727,6 @@ git-tree-sha1 = "4e4282c4d846e11dce56d74fa8040130b7a95cb3"
 uuid = "c5f90fcd-3b7e-5836-afba-fc50a0988cb2"
 version = "1.6.0+0"
 
-[[deps.micromamba_jll]]
-deps = ["Artifacts", "JLLWrappers", "LazyArtifacts", "Libdl"]
-git-tree-sha1 = "717df6f6892af4ee13279a73aa58474e58a88667"
-uuid = "f8abcde7-e9b7-5caa-b8af-a437887ae8e4"
-version = "2.3.1+0"
-
 [[deps.nghttp2_jll]]
 deps = ["Artifacts", "Libdl"]
 uuid = "8e850ede-7688-5339-a07c-302acd2aaf8d"
@@ -2810,12 +2743,6 @@ deps = ["Artifacts", "CompilerSupportLibraries_jll", "Libdl"]
 uuid = "3f19e933-33d8-53b3-aaab-bd5110c3b7a0"
 version = "17.7.0+0"
 
-[[deps.pixi_jll]]
-deps = ["Artifacts", "JLLWrappers", "LazyArtifacts", "Libdl"]
-git-tree-sha1 = "3667b0931a7fe50f0a5554c61af00e5640019e21"
-uuid = "4d7b5844-a134-5dcd-ac86-c8f19cd51bed"
-version = "0.63.2+0"
-
 [[deps.x264_jll]]
 deps = ["Artifacts", "JLLWrappers", "Libdl"]
 git-tree-sha1 = "14cc7083fc6dff3cc44f2bc435ee96d06ed79aa7"

diff --git a/Project.toml b/Project.toml
@@ -4,7 +4,7 @@ authors = ["1-Bart-1 <bart@vandelint.net>", "Oriol Cayon and contributors"]
 version = "3.3.6"
 
 [workspace]
-projects = ["examples", "examples_cp", "docs", "test"]
+projects = ["examples", "docs", "test"]
 
 [deps]
 Colors = "5ae59095-9a9b-59fe-a467-6f913c188581"
@@ -36,17 +36,14 @@ Xfoil = "19641d66-a62d-11e8-2441-8f57a969a9c4"
 YAML = "ddb6d928-2868-570f-bddf-ab3f9cf99eb6"
 
 [weakdeps]
-ControlPlots = "23c2ee80-7a9e-4350-b264-8e670f12517c"
 Makie = "ee78f7c6-11fb-53f2-987a-cfe4a2b5a57a"
-PythonCall = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
+MakieControlPlots = "6d616b69-6563-4f6e-8472-6f6c706c6f74"
 
 [extensions]
-VortexStepMethodControlPlotsExt = ["ControlPlots", "PythonCall"]
-VortexStepMethodMakieExt = "Makie"
+VortexStepMethodMakieExt = ["Makie", "MakieControlPlots"]
 
 [compat]
 Colors = "0.13"
-ControlPlots = "0.2.5, 0.3"
 DefaultApplication = "1"
 DelimitedFiles = "1"
 DifferentiationInterface = "0.7.4"
@@ -57,14 +54,14 @@ LaTeXStrings = "1"
 LinearAlgebra = "1"
 Logging = "1"
 Makie = "0.24.6"
+MakieControlPlots = "0.1.5"
 Measures = "0.3"
 NPZ = "0.4"
 NonlinearSolve = "4.8.0"
 Parameters = "0.12"
 Pkg = "1"
 Printf = "1"
 PreallocationTools = "1.1.2"
-PythonCall = "0.9"
 PrecompileTools = "1.2.1"
 RecursiveArrayTools = "3, 4"
 SciMLBase = "2, 3"

diff --git a/README.md b/README.md
@@ -20,14 +20,7 @@ Example output is shown in the figure below, where the aerodynamic predictions o
 
 ## Installation
 Install [Julia 1.10](https://ufechner7.github.io/2024/08/09/installing-julia-with-juliaup.html) or later, 
-if you haven't already. On Linux, make sure that Python3 and Matplotlib are installed:
-```
-sudo apt install python3-matplotlib
-```
-Furthermore, the package `ControlPlots` must be installed globally:
-```
-julia -e 'using Pkg; Pkg.add("ControlPlots")'
-```
+if you haven't already.
 
 Before installing this software it is suggested to create a new project, for
 example like this:
@@ -62,10 +55,6 @@ julia> using VortexStepMethod
 julia> VortexStepMethod.install_examples()
 julia> include("examples/menu.jl")
 ```
-or, for using the ControlPlots library (faster time-to-first-plot):
-```
-include("examples_cp/menu_cp.jl")
-```
 
 ## Running the examples as developer
 If you have git installed, check out this repo because it makes it easier to understand the code:
@@ -88,11 +77,6 @@ Then you can display a menu with the available examples using the GLMakie librar
 ```julia
 menu()
 ```
-or using the ControlPlots library (faster time-to-first-plot):
-```julia
-menu_cp()
-```
-
 
 To browse the code, it is suggested to use [VSCode](https://code.visualstudio.com/) with the Julia plugin.