catch install-time errors on windows

.github/workflows/main.yml

@@ -57,18 +57,31 @@ jobs:
           # and upload them all to anaconda.org in a single job
           name: package-${{ github.sha }}
           path: ${{ runner.temp }}/conda-bld/*/*.tar.bz2
-      - name: Run examples and prepare artifacts
+      - name: Install local constructor
         run: |
           source ../conda/etc/profile.d/conda.sh
           CONDA_BLD_PATH="${{ runner.temp }}/conda-bld" \
             conda create -n constructor -c local --strict-channel-priority constructor
           conda activate constructor
-          installed_channel=$(conda list --json | jq -r '.[] | select(.name=="constructor") | .channel')
+          installed_channel=$(conda list constructor --json | jq -r '.[].channel')
           if [[ "$installed_channel" != "conda-bld" ]]; then
-            echo $(conda list --json | jq '.[] | select(.name=="constructor")')
+            echo $(conda list constructor --json)
             echo "Installed constructor is not local!"
             exit 1
           fi
+      - name: Patch NSIS to use logging builds on Windows
+        if: startsWith(matrix.os, 'windows')
+        run: |
+          source ../conda/etc/profile.d/conda.sh
+          conda activate constructor
+          nsis_version=$(conda list nsis --json | jq -r ".[].version")
+          curl -sL "https://sourceforge.net/projects/nsis/files/NSIS%203/${nsis_version}/nsis-${nsis_version}-log.zip/download" -o "nsis-${nsis_version}-log.zip"
+          7z x "nsis-${nsis_version}-log.zip" -aoa -o"$CONDA_PREFIX/NSIS/"
+          echo "NSIS_USING_LOG_BUILD=1" >> $GITHUB_ENV
+      - name: Run examples and prepare artifacts
+        run: |
+          source ../conda/etc/profile.d/conda.sh
+          conda activate constructor
           mkdir -p examples_artifacts/
           python scripts/run_examples.py --keep-artifacts=examples_artifacts/
       - name: Upload the example installers as artifacts

constructor/nsis/main.nsi.tmpl

@@ -5,6 +5,27 @@
 
 Unicode "true"
 
+#if enable_debugging is True
+# Special logging build needed for ENABLE_LOGGING
+# See https://nsis.sourceforge.io/Special_Builds
+!define ENABLE_LOGGING
+#endif
+
+# Comes from https://nsis.sourceforge.io/Logging:Enable_Logs_Quickly
+!define LogSet "!insertmacro LogSetMacro"
+!macro LogSetMacro SETTING
+  !ifdef ENABLE_LOGGING
+    LogSet ${SETTING}
+  !endif
+!macroend
+
+!define LogText "!insertmacro LogTextMacro"
+!macro LogTextMacro INPUT_TEXT
+  !ifdef ENABLE_LOGGING
+    LogText ${INPUT_TEXT}
+  !endif
+!macroend
+
 !include "WinMessages.nsh"
 !include "WordFunc.nsh"
 !include "LogicLib.nsh"
@@ -414,6 +435,7 @@ Function InstModePage_Leave
 FunctionEnd
 
 Function .onInit
+    ${LogSet} on
     Push $0
     Push $1
     Push $2
@@ -835,6 +857,7 @@ Function AbortRetryNSExecWait
         nsExec::ExecToLog $2
         pop $0
         ${If} $0 != "0"
+            DetailPrint "::error:: $1"
             MessageBox MB_ABORTRETRYIGNORE|MB_ICONEXCLAMATION|MB_DEFBUTTON3 \
                     $1 /SD IDIGNORE IDABORT abort IDRETRY retry
             ; IDIGNORE: Continue anyway
@@ -851,6 +874,7 @@ FunctionEnd
 
 # Installer sections
 Section "Install"
+    ${LogSet} on
 
     SetOutPath "$INSTDIR\Lib"
     File "@NSIS_DIR@\_nsis.py"
@@ -893,6 +917,13 @@ Section "Install"
 
     @PKG_COMMANDS@
 
+    SetDetailsPrint TextOnly
+    DetailPrint "Setting up the package cache ..."
+    push '"$INSTDIR\_conda.exe" constructor --prefix "$INSTDIR" --extract-conda-pkgs'
+    push 'Failed to extract packages'
+    call AbortRetryNSExecWait
+    SetDetailsPrint both
+
     @SETUP_ENVS@
 
     @WRITE_CONDARC@
@@ -906,9 +937,12 @@ Section "Install"
         call AbortRetryNSExecWait
     ${EndIf}
 
+#if has_conda is True
+    DetailPrint "Initializing conda directories..."
     push '"$INSTDIR\pythonw.exe" -E -s "$INSTDIR\Lib\_nsis.py" mkdirs'
-    push 'Failed to initialize Anaconda directories'
+    push 'Failed to initialize conda directories'
     call AbortRetryNSExecWait
+#endif
 
     ${If} $Ana_PostInstall_State = ${BST_CHECKED}
         DetailPrint "Running post install..."

constructor/winexe.py

@@ -68,25 +68,29 @@ def setup_envs_commands(info, dir_path):
         SetDetailsPrint both
         # List of packages to install
         SetOutPath "{env_txt_dir}"
-        File {env_txt_abspath}
+        File "{env_txt_abspath}"
         # A conda-meta\history file is required for a valid conda prefix
         SetOutPath "{conda_meta}"
-        FileOpen $0 "history" w
-        FileClose $0
+        File "{history_abspath}"
         # Set channels
         System::Call 'kernel32::SetEnvironmentVariable(t,t)i("CONDA_CHANNELS", "{channels}").r0'
         # Run conda
         SetDetailsPrint TextOnly
         nsExec::ExecToLog '"$INSTDIR\_conda.exe" install --offline -yp "{prefix}" --file "{env_txt}" {shortcuts}'
         Pop $0
+        ${{If}} $0 != "0"
+            DetailPrint "::error:: Failed to link extracted packages to {prefix}!"
+            MessageBox MB_OK|MB_ICONSTOP "Failed to link extracted packages to {prefix}. Please check logs." /SD IDOK
+            Abort
+        ${{EndIf}}
         SetDetailsPrint both
         # Cleanup {name} env.txt
         SetOutPath "$INSTDIR"
         Delete "{env_txt}"
         # Restore shipped conda-meta\history for remapped
         # channels and retain only the first transaction
         SetOutPath "{conda_meta}"
-        File {history_abspath}
+        File "{history_abspath}"
         """
 
     lines = template.format(  # this one block is for the base environment
@@ -194,6 +198,8 @@ def make_nsi(info, dir_path, extra_files=()):
     ppd['keep_pkgs'] = info.get('keep_pkgs') or False
     ppd['post_install_exists'] = bool(info.get('post_install'))
     ppd['with_conclusion_text'] = bool(conclusion_text)
+    ppd["enable_debugging"] = bool(os.environ.get("NSIS_USING_LOG_BUILD"))
+    ppd["has_conda"] = info["_has_conda"]
     data = preprocess(data, ppd)
     data = fill_template(data, replace)
     if info['_platform'].startswith("win") and sys.platform != 'win32':

news/553-fix-windows-ci

@@ -0,0 +1,25 @@
+Enhancements:
+-------------
+
+* A single installer can now provide multiple environments through the `extra_envs` key (#359 via #509 and #553)
+
+Bug fixes:
+----------
+
+* Windows CI now correctly detects installation problems (#551)
+
+Deprecations:
+-------------
+
+* <news item>
+
+Docs:
+-----
+
+* <news item>
+
+Other:
+------
+
+* <news item>
+

scripts/run_examples.py

@@ -102,6 +102,14 @@ def run_examples(keep_artifacts=None):
             elif ext == 'exe':
                 cmd = ['cmd.exe', '/c', 'start', '/wait', fpath, '/S', '/D=%s' % env_dir]
             test_errored = _execute(cmd)
+            if ext == 'exe' and os.environ.get("NSIS_USING_LOG_BUILD"):
+                test_errored = 0
+                with open(os.path.join(env_dir, "install.log"), encoding="utf-16-le") as f:
+                    print('---  LOGS  ---')
+                    for line in f:
+                        if ":error:" in line:
+                            print(line.rstrip())
+                            test_errored = 1
             errored += test_errored
             if keep_artifacts:
                 shutil.move(fpath, keep_artifacts)