session info for collapseReplicates question

session_info.R

R version 3.5.1 (2018-07-02)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 16.04.5 LTS

Matrix products: default
BLAS: /usr/lib/libblas/libblas.so.3.6.0
LAPACK: /usr/lib/lapack/liblapack.so.3.6.0

locale:
 [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
 [3] LC_TIME=de_DE.UTF-8        LC_COLLATE=en_US.UTF-8    
 [5] LC_MONETARY=de_DE.UTF-8    LC_MESSAGES=en_US.UTF-8   
 [7] LC_PAPER=de_DE.UTF-8       LC_NAME=C                 
 [9] LC_ADDRESS=C               LC_TELEPHONE=C            
[11] LC_MEASUREMENT=de_DE.UTF-8 LC_IDENTIFICATION=C       

attached base packages:
[1] parallel  stats4    stats     graphics  grDevices utils     datasets 
[8] methods   base     

other attached packages:
 [1] data.table_1.11.8           DESeq2_1.20.0              
 [3] SummarizedExperiment_1.10.1 DelayedArray_0.6.6         
 [5] BiocParallel_1.14.2         matrixStats_0.54.0         
 [7] Biobase_2.40.0              GenomicRanges_1.32.7       
 [9] GenomeInfoDb_1.16.0         IRanges_2.14.12            
[11] S4Vectors_0.18.3            BiocGenerics_0.26.0        
[13] colorout_1.2-0             

loaded via a namespace (and not attached):
 [1] bit64_0.9-7            splines_3.5.1          Formula_1.2-3         
 [4] assertthat_0.2.0       highr_0.7              latticeExtra_0.6-28   
 [7] blob_1.1.1             GenomeInfoDbData_1.1.0 pillar_1.3.0          
[10] RSQLite_2.1.1          backports_1.1.2        lattice_0.20-38       
[13] glue_1.3.0             digest_0.6.18          RColorBrewer_1.1-2    
[16] XVector_0.20.0         checkmate_1.8.5        colorspace_1.3-2      
[19] htmltools_0.3.6        Matrix_1.2-15          plyr_1.8.4            
[22] XML_3.98-1.16          pkgconfig_2.0.2        genefilter_1.62.0     
[25] zlibbioc_1.26.0        purrr_0.2.5            xtable_1.8-3          
[28] scales_1.0.0           htmlTable_1.12         tibble_1.4.2          
[31] annotate_1.58.0        ggplot2_3.1.0          nnet_7.3-12           
[34] lazyeval_0.2.1         survival_2.43-3        magrittr_1.5          
[37] crayon_1.3.4           memoise_1.1.0          foreign_0.8-71        
[40] tools_3.5.1            stringr_1.3.1          locfit_1.5-9.1        
[43] munsell_0.5.0          cluster_2.0.7-1        AnnotationDbi_1.42.1  
[46] bindrcpp_0.2.2         compiler_3.5.1         rlang_0.3.0.1         
[49] grid_3.5.1             RCurl_1.95-4.11        rstudioapi_0.8        
[52] htmlwidgets_1.3        bitops_1.0-6           base64enc_0.1-3       
[55] gtable_0.2.0           DBI_1.0.0              R6_2.3.0              
[58] gridExtra_2.3          knitr_1.20             dplyr_0.7.8           
[61] bit_1.1-14             bindr_0.1.1            Hmisc_4.1-1           
[64] stringi_1.2.4          Rcpp_1.0.0             geneplotter_1.58.0    
[67] rpart_4.1-13           acepack_1.4.1          tidyselect_0.2.5