Introduced new environment config variable (#1756)

* Introduced new environment config variable

O2DPG_MC_CFG_ROOT is going to replace O2DPG_ROOT inside the config files. This will make the system more flexible by allowing the user to change this variable on-the-fly, and hence not be limited by the loaded version of O2DPG.

Author: jackal1-66

.github/workflows/syntax-checks.yml

@@ -71,6 +71,27 @@ jobs:
           jq -r '.comments[] | "Error found in \(.file) line \(.line):\n::error file=\(.file),line=\(.line),endLine=\(.endLine),col=\(.column),endColumn=\(.endColumn)::\(.message)"' errors.json
           exit "$error"
 
+  config-check:
+    name: Config-check
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Run .ini configs check
+        run: |
+          error=0
+          readarray -d '' files < \
+            <(find . -path ./.git -prune -false -or -type f -name '*.ini' -print0)
+          for cfg in "${files[@]}"; do
+            if grep -q "O2DPG_ROOT" "$cfg"; then
+              error=1
+              echo "Deprecated O2DPG_ROOT detected in $cfg, replace with O2DPG_MC_CONFIG_ROOT" >&2
+            fi
+          done
+          exit "$error"
+
   pylint:
     name: Pylint
     runs-on: ubuntu-latest

MC/config/ALICE3/ini/pythia8_ArAr.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_ArAr.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_ArAr.cfg

MC/config/ALICE3/ini/pythia8_KrKr.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_KrKr.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_KrKr.cfg

MC/config/ALICE3/ini/pythia8_OO.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_OO.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_OO.cfg

MC/config/ALICE3/ini/pythia8_PbPb.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_PbPb.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_PbPb.cfg

MC/config/ALICE3/ini/pythia8_PbPb_536tev.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_PbPb_536tev.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_PbPb_536tev.cfg

MC/config/ALICE3/ini/pythia8_XeXe.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_XeXe.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_XeXe.cfg

MC/config/ALICE3/ini/pythia8_pp.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_pp.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_pp.cfg

MC/config/ALICE3/ini/pythia8_pp_136tev.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_pp_136tev.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_pp_136tev.cfg

MC/config/ALICE3/ini/pythia8_pp_13tev.ini

@@ -2,8 +2,8 @@
 width[2]=6.0
 
 [GeneratorExternal]
-fileName=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
+fileName=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator_pythia8_ALICE3.C
 funcName=generator_pythia8_ALICE3()
 
 [GeneratorPythia8]
-config=${O2DPG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_pp_13tev.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_pp_13tev.cfg