Fix debian builds in CI (#297)

Author: lia-viam

.github/workflows/conan.yml

@@ -47,7 +47,7 @@ jobs:
           brew install python ninja buf
           python -m pip install conan
 
-      - name: Build
+      - name: Create package
         run: |
           # `buf` tries to read a CLI config file that we don't actually use located at
           # ~/.config/buf/config.yaml. We don't always have permission to access this
@@ -56,7 +56,7 @@ jobs:
           # more details.
           export BUF_CONFIG_DIR=$(mktemp -d)
           conan profile detect
-          conan create . --build=missing
+          conan create . --build=missing -s compiler.cppstd=17
 
   build_linux_ubuntu_jammy:
     if: github.repository_owner == 'viamrobotics'
@@ -114,7 +114,7 @@ jobs:
         shell: bash
         run: |
           conan profile detect
-          conan create . --build=missing
+          conan create . --build=missing -s compiler.cppstd=14
 
   build_linux_debian:
     if: github.repository_owner == 'viamrobotics'
@@ -164,12 +164,11 @@ jobs:
               ninja-build \
               python3 \
               python3-pip \
+              python3-venv \
               software-properties-common \
               sudo \
               wget
 
-          pip install conan
-
       - name: Update CMake for bullseye
         if: ${{ matrix.image  == 'debian:bullseye' }}
         run: |
@@ -180,8 +179,15 @@ jobs:
 
           apt-get -y --no-install-recommends install -t bullseye-backports cmake
 
-      - name: Create package
+      # Note bullseye can use regular pip + conan no problem, but
+      # bookworm is a managed environment, so we use a venv in both because it is more
+      # trouble to bifurcate them.
+      - name: Install conan in venv and create package
         shell: bash
         run: |
+          python3 -m venv ./conan_venv
+          source ./conan_venv/bin/activate
+
+          pip install conan
           conan profile detect
-          conan create . --build=missing
+          conan create . --build=missing -s compiler.cppstd=14