From 76da9cc981a929f66189cdef87f50c95a9b98981 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 12:01:05 +0000
Subject: [PATCH 01/23] REMOVE Just Windows for now.

---
 .github/workflows/_build_and_package.yml | 26 ++----------------------
 1 file changed, 2 insertions(+), 24 deletions(-)

diff --git a/.github/workflows/_build_and_package.yml b/.github/workflows/_build_and_package.yml
index 8ac2b419..66648b12 100644
--- a/.github/workflows/_build_and_package.yml
+++ b/.github/workflows/_build_and_package.yml
@@ -5,33 +5,11 @@ on:
 
 jobs:
 
-  QC:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v4
-    - name: Set Environment Variables
-      uses: "./.github/workflows/setup"
-    - name: Quality Control
-      uses: "./.github/workflows/qc"
-
-  Test:
-    needs: QC
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v4
-    - name: Set Environment Variables
-      uses: "./.github/workflows/setup"
-    - name: "Test (Backend)"
-      uses: "./.github/workflows/test"
-
   Build:
-    needs: Test
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest]
+        os: [windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout
@@ -46,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest]
+        os: [windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout

From 084092e5b7ad3b920bbc9f379d9bc5483e68bc55 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 12:04:07 +0000
Subject: [PATCH 02/23] Qt 6.4.2 explicitly.

---
 .github/workflows/setup/action.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/setup/action.yml b/.github/workflows/setup/action.yml
index b4c1bd21..4ffb7ee9 100644
--- a/.github/workflows/setup/action.yml
+++ b/.github/workflows/setup/action.yml
@@ -9,7 +9,7 @@ runs:
     run: |
       set -ex
       echo "pythonVersion=3.10" >> ${GITHUB_ENV}
-      echo "qtVersion=6.3.*" >> ${GITHUB_ENV}
+      echo "qtVersion=6.4.2" >> ${GITHUB_ENV}
 
   - name: Get Code Version
     shell: bash

From c83901a0c60c80f7b0213cae983d3c8ee6df6b32 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 13:42:53 +0000
Subject: [PATCH 03/23] Check for cache hit.

---
 .github/workflows/build/windows/action.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 16506979..ce9b9683 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -30,10 +30,10 @@ runs:
       path: ${{ runner.temp }}\qt
 
   - name: Install Qt
-    # if: ${{ steps.cache-qt.outputs.cache-hit != 'true' }}
+    if: ${{ steps.cache-qt.outputs.cache-hit != 'true' }}
     shell: bash
     run: |
-      aqt install-qt --outputdir ${RUNNER_TEMP}/qt windows desktop ${{ env.qtVersion }} win64_msvc2019_64 -m all
+      aqt install-qt --outputdir ${RUNNER_TEMP}\qt windows desktop ${{ env.qtVersion }} win64_msvc2019_64 -m all
 
   - name: Remove /usr/bin/link
     shell: bash

From 85a84074766ac15ad4a270b22829153edf5f21ee Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 13:43:02 +0000
Subject: [PATCH 04/23] Add Qt_DIR bin to path.

---
 .github/workflows/build/windows/action.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index ce9b9683..3559a7c2 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -50,6 +50,7 @@ runs:
       cd frontend
 
       Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
+      export PATH="${Qt6_DIR}\bin;$PATH"
 
       cmake --preset ci-windows
       cmake --build --preset build

From 5ff8a1043f991bc1419ca43b81f8a128d82677bf Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 14:06:41 +0000
Subject: [PATCH 05/23] No more setting of MSVC stuff.

---
 .github/workflows/build/windows/action.yml | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 3559a7c2..bca401ec 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -33,16 +33,7 @@ runs:
     if: ${{ steps.cache-qt.outputs.cache-hit != 'true' }}
     shell: bash
     run: |
-      aqt install-qt --outputdir ${RUNNER_TEMP}\qt windows desktop ${{ env.qtVersion }} win64_msvc2019_64 -m all
-
-  - name: Remove /usr/bin/link
-    shell: bash
-    run: |
-      echo "Removing /usr/bin/link.exe since it will conflict with our MSVC paths..."
-      rm -rf /usr/bin/link.exe
-
-  - name: Setup MSVC Compiler
-    uses: ilammy/msvc-dev-cmd@v1
+      aqt install-qt --outputdir ${RUNNER_TEMP}/qt windows desktop ${{ env.qtVersion }} win64_msvc2019_64 -m all
 
   - name: Build Frontend
     shell: bash

From 196e9a3ff0cd1081aefaaec355e2fba5ac515800 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 14:06:46 +0000
Subject: [PATCH 06/23] Debug.

---
 .github/workflows/build/windows/action.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index bca401ec..d0eef8d0 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -42,6 +42,7 @@ runs:
 
       Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
       export PATH="${Qt6_DIR}\bin;$PATH"
+      ls -R ${Qt6_DIR}
 
       cmake --preset ci-windows
       cmake --build --preset build

From bad24af11f5c78672159151cfcd4405980b5e33b Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 16:34:40 +0000
Subject: [PATCH 07/23] Undo stupidity, try a direct path to Qt6Config.cmake.

---
 .github/workflows/build/windows/action.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index d0eef8d0..b5bf4ade 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -22,6 +22,9 @@ runs:
     shell: bash
     run: pip3 install aqtinstall
 
+  - name: Setup MSVC Compiler
+    uses: ilammy/msvc-dev-cmd@v1
+
   - name: Retrieve Qt Cache
     id: cache-qt
     uses: actions/cache@v4
@@ -40,8 +43,7 @@ runs:
     run: |
       cd frontend
 
-      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
-      export PATH="${Qt6_DIR}\bin;$PATH"
+      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64\lib\cmake\Qt6"
       ls -R ${Qt6_DIR}
 
       cmake --preset ci-windows

From efae355f7be8565cb3876045b86c979046c1e31f Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 16:41:38 +0000
Subject: [PATCH 08/23] Is this is a CMake issue...

---
 .github/workflows/build/windows/action.yml | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index b5bf4ade..4425114b 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -18,6 +18,11 @@ runs:
     with:
       python-version: '3.11'
 
+  - name: Setup cmake
+    uses: jwlawson/actions-setup-cmake@v2
+    with:
+      cmake-version: '3.x'
+
   - name: Install Python Dependencies
     shell: bash
     run: pip3 install aqtinstall
@@ -43,8 +48,7 @@ runs:
     run: |
       cd frontend
 
-      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64\lib\cmake\Qt6"
-      ls -R ${Qt6_DIR}
+      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
 
       cmake --preset ci-windows
       cmake --build --preset build

From f7f831580e81bbbf847320c54871e402d1c751c8 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Mon, 15 Dec 2025 16:50:45 +0000
Subject: [PATCH 09/23] Desperation.

---
 .github/workflows/build/windows/action.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 4425114b..f149698f 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -48,7 +48,7 @@ runs:
     run: |
       cd frontend
 
-      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
+      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64\lib\cmake\Qt6"
 
       cmake --preset ci-windows
       cmake --build --preset build

From d6efcf0d6f147b268abe761d22e8ad3480664477 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Tue, 16 Dec 2025 10:23:36 +0000
Subject: [PATCH 10/23] No preset.

---
 .github/workflows/build/windows/action.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index f149698f..5329a446 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -50,8 +50,10 @@ runs:
 
       Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64\lib\cmake\Qt6"
 
-      cmake --preset ci-windows
-      cmake --build --preset build
+      mkdir build && cd build
+      cmake ../ -G Ninja -DCMAKE_C_COMPILER=cl -DCMAKE_CXX_COMPILER=cl
+      #cmake --preset ci-windows
+      #cmake --build --preset build
 
   - name: Deploy Runtime Libs
     shell: bash

From b3dd533555d15fa9605a2066a045f4466430b9a4 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Tue, 16 Dec 2025 13:52:03 +0000
Subject: [PATCH 11/23] Back to the original path.

---
 .github/workflows/build/windows/action.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 5329a446..1978f96d 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -48,7 +48,7 @@ runs:
     run: |
       cd frontend
 
-      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64\lib\cmake\Qt6"
+      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
 
       mkdir build && cd build
       cmake ../ -G Ninja -DCMAKE_C_COMPILER=cl -DCMAKE_CXX_COMPILER=cl

From 9eb7a8fd8733a64217e85c7f71262a3c2151341d Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Tue, 16 Dec 2025 14:00:43 +0000
Subject: [PATCH 12/23] Setup MSVC after getting Qt perhaps....

---
 .github/workflows/build/windows/action.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 1978f96d..dfa364dc 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -27,9 +27,6 @@ runs:
     shell: bash
     run: pip3 install aqtinstall
 
-  - name: Setup MSVC Compiler
-    uses: ilammy/msvc-dev-cmd@v1
-
   - name: Retrieve Qt Cache
     id: cache-qt
     uses: actions/cache@v4
@@ -43,6 +40,9 @@ runs:
     run: |
       aqt install-qt --outputdir ${RUNNER_TEMP}/qt windows desktop ${{ env.qtVersion }} win64_msvc2019_64 -m all
 
+  - name: Setup MSVC Compiler
+    uses: ilammy/msvc-dev-cmd@v1
+
   - name: Build Frontend
     shell: bash
     run: |

From 1be83c85de0e8701ecad2184d5e89b4cf0a6176d Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Tue, 16 Dec 2025 16:49:09 +0000
Subject: [PATCH 13/23] Specific toolset?

---
 .github/workflows/build/windows/action.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index dfa364dc..2c448bc7 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -42,6 +42,8 @@ runs:
 
   - name: Setup MSVC Compiler
     uses: ilammy/msvc-dev-cmd@v1
+    with:
+      toolset: 14.41.17.11
 
   - name: Build Frontend
     shell: bash

From 08597fc28efa4515807ee427254744eda7392338 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Wed, 17 Dec 2025 11:43:10 +0000
Subject: [PATCH 14/23] No toolset, ninja already installed.

---
 .github/workflows/build/windows/action.yml | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 2c448bc7..675df837 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -10,10 +10,6 @@ runs:
   using: "composite"
   steps:
 
-  - name: Install Chocolatey Dependencies
-    shell: bash
-    run: choco install -y ninja
-
   - uses: actions/setup-python@v5
     with:
       python-version: '3.11'
@@ -42,8 +38,6 @@ runs:
 
   - name: Setup MSVC Compiler
     uses: ilammy/msvc-dev-cmd@v1
-    with:
-      toolset: 14.41.17.11
 
   - name: Build Frontend
     shell: bash

From fd3a40fd5efcf98f951721c45b6cae993ff0f600 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Thu, 26 Mar 2026 12:32:19 +0000
Subject: [PATCH 15/23] Pointless change to retrigger build.

---
 .github/workflows/build/windows/action.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 675df837..fee1be7c 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -47,6 +47,7 @@ runs:
       Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
 
       mkdir build && cd build
+
       cmake ../ -G Ninja -DCMAKE_C_COMPILER=cl -DCMAKE_CXX_COMPILER=cl
       #cmake --preset ci-windows
       #cmake --build --preset build

From 4cc3f03c717cffdc8b0db3c24f1b1b3df35d1460 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Thu, 26 Mar 2026 14:55:30 +0000
Subject: [PATCH 16/23] No cache request, specific MSVC version.

---
 .github/workflows/build/windows/action.yml | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index fee1be7c..180f492f 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -23,21 +23,23 @@ runs:
     shell: bash
     run: pip3 install aqtinstall
 
-  - name: Retrieve Qt Cache
-    id: cache-qt
-    uses: actions/cache@v4
-    with:
-      key: windows-qt-${{ env.qtVersion }}
-      path: ${{ runner.temp }}\qt
+#  - name: Retrieve Qt Cache
+#    id: cache-qt
+#    uses: actions/cache@v4
+#    with:
+#      key: windows-qt-${{ env.qtVersion }}
+#      path: ${{ runner.temp }}\qt
 
   - name: Install Qt
-    if: ${{ steps.cache-qt.outputs.cache-hit != 'true' }}
+#    if: ${{ steps.cache-qt.outputs.cache-hit != 'true' }}
     shell: bash
     run: |
       aqt install-qt --outputdir ${RUNNER_TEMP}/qt windows desktop ${{ env.qtVersion }} win64_msvc2019_64 -m all
 
   - name: Setup MSVC Compiler
     uses: ilammy/msvc-dev-cmd@v1
+    with:
+      toolset: 19.44
 
   - name: Build Frontend
     shell: bash

From 664d4a12087b95851487d5ae6a6672d90a0237e6 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Thu, 26 Mar 2026 15:01:22 +0000
Subject: [PATCH 17/23] Let's install that version first.

---
 .github/workflows/build/windows/action.yml | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 180f492f..6a1467f1 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -5,6 +5,10 @@ inputs:
   cacheOnly:
     type: boolean
     default: false
+  msvcVersion:
+    type: string
+    default: '19.44'
+    required: true
 
 runs:
   using: "composite"
@@ -14,6 +18,22 @@ runs:
     with:
       python-version: '3.11'
 
+  - name: Install Downgraded MSVC
+    shell: powershell
+    run: |
+      # For versions update see here: https://learn.microsoft.com/en-us/visualstudio/install/workload-component-id-vs-build-tools?view=vs-2022
+      Set-Location "C:\Program Files (x86)\Microsoft Visual Studio\Installer\"
+      $InstallPath = "C:\Program Files\Microsoft Visual Studio\2022\Enterprise"
+      $componentsToInstall= @(
+      "Microsoft.VisualStudio.Component.VC.${{ inputs.msvcVersion }}.x86.x64"
+      "Microsoft.VisualStudio.Component.VC.${{ inputs.msvcVersion }}.ATL"
+      )
+      [string]$workloadArgs = $componentsToInstall | ForEach-Object {" --add " +  $_}
+      $Arguments = ('/c', "vs_installer.exe", 'modify', '--installPath', "`"$InstallPath`"",$workloadArgs, '--quiet', '--norestart', '--nocache')
+      # should be run twice
+      $process = Start-Process -FilePath cmd.exe -ArgumentList $Arguments -Wait -PassThru -WindowStyle Hidden
+      $process = Start-Process -FilePath cmd.exe -ArgumentList $Arguments -Wait -PassThru -WindowStyle Hidden
+
   - name: Setup cmake
     uses: jwlawson/actions-setup-cmake@v2
     with:
@@ -39,7 +59,7 @@ runs:
   - name: Setup MSVC Compiler
     uses: ilammy/msvc-dev-cmd@v1
     with:
-      toolset: 19.44
+      toolset: ${{ inputs.msvcVersion }}
 
   - name: Build Frontend
     shell: bash

From dd5f9cbeca32b579da258908c01413128a97a2b6 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Thu, 26 Mar 2026 15:16:57 +0000
Subject: [PATCH 18/23] Python version.

---
 .github/workflows/build/windows/action.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 6a1467f1..bf418859 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -16,7 +16,7 @@ runs:
 
   - uses: actions/setup-python@v5
     with:
-      python-version: '3.11'
+      python-version:  ${{ env.pythonVersion }}
 
   - name: Install Downgraded MSVC
     shell: powershell

From 0b4408317ab9d871298fd798ce33476c529a6d3c Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Thu, 26 Mar 2026 17:16:22 +0000
Subject: [PATCH 19/23] Python version, deps.

---
 .github/workflows/build/windows/action.yml | 2 +-
 .github/workflows/setup/action.yml         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index bf418859..e54cbab2 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -41,7 +41,7 @@ runs:
 
   - name: Install Python Dependencies
     shell: bash
-    run: pip3 install aqtinstall
+    run: pip3 install py7zr==1.1.0 aqtinstall conan
 
 #  - name: Retrieve Qt Cache
 #    id: cache-qt
diff --git a/.github/workflows/setup/action.yml b/.github/workflows/setup/action.yml
index 4ffb7ee9..525115dd 100644
--- a/.github/workflows/setup/action.yml
+++ b/.github/workflows/setup/action.yml
@@ -8,7 +8,7 @@ runs:
     shell: bash
     run: |
       set -ex
-      echo "pythonVersion=3.10" >> ${GITHUB_ENV}
+      echo "pythonVersion=3.11" >> ${GITHUB_ENV}
       echo "qtVersion=6.4.2" >> ${GITHUB_ENV}
 
   - name: Get Code Version

From 419f8a332475e1ebbfb51b8f84b9433a88692f02 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Fri, 27 Mar 2026 12:06:16 +0000
Subject: [PATCH 20/23] Blah.

---
 .github/workflows/build/windows/action.yml | 34 +++++++++++-----------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index e54cbab2..122c0453 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -18,21 +18,21 @@ runs:
     with:
       python-version:  ${{ env.pythonVersion }}
 
-  - name: Install Downgraded MSVC
-    shell: powershell
-    run: |
-      # For versions update see here: https://learn.microsoft.com/en-us/visualstudio/install/workload-component-id-vs-build-tools?view=vs-2022
-      Set-Location "C:\Program Files (x86)\Microsoft Visual Studio\Installer\"
-      $InstallPath = "C:\Program Files\Microsoft Visual Studio\2022\Enterprise"
-      $componentsToInstall= @(
-      "Microsoft.VisualStudio.Component.VC.${{ inputs.msvcVersion }}.x86.x64"
-      "Microsoft.VisualStudio.Component.VC.${{ inputs.msvcVersion }}.ATL"
-      )
-      [string]$workloadArgs = $componentsToInstall | ForEach-Object {" --add " +  $_}
-      $Arguments = ('/c', "vs_installer.exe", 'modify', '--installPath', "`"$InstallPath`"",$workloadArgs, '--quiet', '--norestart', '--nocache')
-      # should be run twice
-      $process = Start-Process -FilePath cmd.exe -ArgumentList $Arguments -Wait -PassThru -WindowStyle Hidden
-      $process = Start-Process -FilePath cmd.exe -ArgumentList $Arguments -Wait -PassThru -WindowStyle Hidden
+#  - name: Install Downgraded MSVC
+#    shell: powershell
+#    run: |
+#      # For versions update see here: https://learn.microsoft.com/en-us/visualstudio/install/workload-component-id-vs-build-tools?view=vs-2022
+#      Set-Location "C:\Program Files (x86)\Microsoft Visual Studio\Installer\"
+#      $InstallPath = "C:\Program Files\Microsoft Visual Studio\2022\Enterprise"
+#      $componentsToInstall= @(
+#      "Microsoft.VisualStudio.Component.VC.${{ inputs.msvcVersion }}.x86.x64"
+#      "Microsoft.VisualStudio.Component.VC.${{ inputs.msvcVersion }}.ATL"
+#      )
+#      [string]$workloadArgs = $componentsToInstall | ForEach-Object {" --add " +  $_}
+#      $Arguments = ('/c', "vs_installer.exe", 'modify', '--installPath', "`"$InstallPath`"",$workloadArgs, '--quiet', '--norestart', '--nocache')
+#      # should be run twice
+#      $process = Start-Process -FilePath cmd.exe -ArgumentList $Arguments -Wait -PassThru -WindowStyle Hidden
+#      $process = Start-Process -FilePath cmd.exe -ArgumentList $Arguments -Wait -PassThru -WindowStyle Hidden
 
   - name: Setup cmake
     uses: jwlawson/actions-setup-cmake@v2
@@ -58,8 +58,8 @@ runs:
 
   - name: Setup MSVC Compiler
     uses: ilammy/msvc-dev-cmd@v1
-    with:
-      toolset: ${{ inputs.msvcVersion }}
+#    with:
+#      toolset: ${{ inputs.msvcVersion }}
 
   - name: Build Frontend
     shell: bash

From 6f84711564afd40502e73fa6416fc3fb19febd9c Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Fri, 27 Mar 2026 12:14:37 +0000
Subject: [PATCH 21/23] Blurp.

---
 .github/workflows/build/windows/action.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 122c0453..4da2a46d 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -66,7 +66,9 @@ runs:
     run: |
       cd frontend
 
-      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
+      Qt6_DIR="${RUNNER_TEMP}/qt/${{ env.qtVersion }}/msvc2019_64"
+      echo $Qt6_DIR
+      ls $QT6_DIR
 
       mkdir build && cd build
 

From a49f3ac30c89880c4d7ec448e041ae4f6e46ade0 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Fri, 27 Mar 2026 12:15:38 +0000
Subject: [PATCH 22/23] Path.

---
 .github/workflows/build/windows/action.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 4da2a46d..78737d0a 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -67,6 +67,7 @@ runs:
       cd frontend
 
       Qt6_DIR="${RUNNER_TEMP}/qt/${{ env.qtVersion }}/msvc2019_64"
+      export PATH="${Qt6_DIR}\bin;$PATH"
       echo $Qt6_DIR
       ls $QT6_DIR
 

From 4e1d98fc0e956af8884da86dc66aa685f8ebdc81 Mon Sep 17 00:00:00 2001
From: Tristan Youngs <tristan.youngs@stfc.ac.uk>
Date: Fri, 27 Mar 2026 12:19:29 +0000
Subject: [PATCH 23/23] Not path.

---
 .github/workflows/build/windows/action.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/build/windows/action.yml b/.github/workflows/build/windows/action.yml
index 78737d0a..b686f048 100644
--- a/.github/workflows/build/windows/action.yml
+++ b/.github/workflows/build/windows/action.yml
@@ -66,10 +66,10 @@ runs:
     run: |
       cd frontend
 
-      Qt6_DIR="${RUNNER_TEMP}/qt/${{ env.qtVersion }}/msvc2019_64"
+      Qt6_DIR="${RUNNER_TEMP}\qt\${{ env.qtVersion }}\msvc2019_64"
       export PATH="${Qt6_DIR}\bin;$PATH"
       echo $Qt6_DIR
-      ls $QT6_DIR
+      ls $Qt6_DIR
 
       mkdir build && cd build